Years of life: 16.12.1946 - 16.12.2015 years.
By the decision of the Chelyabinsk City Duma on August 30, 2011 number 26/7 he awarded the title of the "Honorary Citizen of the city of Chelyabinsk."
He was an Honored Worker of housing and communal services of the Russian Federation. He was the winner of the contest "Man of the Year in Chelyabinsk - 1999". He was the winner of the City Award "Recognition 2006". He was awarded the Order of Friendship, the Medal "For Service to the Motherland» of the II degree.
He had been working in the housing sector since 1982, then led the district housing management of the Kalininsky district of Chelyabinsk. In 1983-1998 years he was the head of Industrial housing repair and maintenance management in the Kalininsky district, the head of Industrial housing repair and maintenance management in the Kurchatovsky district. In 1998-2004 he was the director of the municipal unitary enterprise «PZHREO Kurchatovskogo rayona." Since 2004 he had been a director of LLC "PZHREO Kurchatovskogo rayona."
Davydenko was one of the initiators of the reform of housing and communal services in the city of Chelyabinsk. At the initiative of Anatoly Yakovlevich there was carried out repairs of soft roofing with the use of electric air heaters, new materials and technologies. Under his direction in the company a modern production base, a large fleet of vehicles, rescue and recovery service had been created , an automated system of dispatching control of building heating parameters had been implemented, control and dispatch service on lift facilities management started working. Also it was built a boiler for heating remote residential buildings of the Kurchatovsky district of Chelyabinsk.