400823434 has 32 divisors (see below), whose sum is σ = 667408896. Its totient is φ = 179019120.

The previous prime is 400823429. The next prime is 400823441. The reversal of 400823434 is 434328004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414019 + ... + 414985.

It is an arithmetic number, because the mean of its divisors is an integer number (20856528).

Almost surely, 2^400823434 is an apocalyptic number.

400823434 is a deficient number, since it is larger than the sum of its proper divisors (266585462).

400823434 is a wasteful number, since it uses less digits than its factorization.

400823434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 400823434 is about 20020.5752664603. The cubic root of 400823434 is about 737.3115459879.

The spelling of 400823434 in words is "four hundred million, eight hundred twenty-three thousand, four hundred thirty-four".