400794872 has 32 divisors (see below), whose sum is σ = 785285280. Its totient is φ = 191410560.

The previous prime is 400794859. The next prime is 400794881. The reversal of 400794872 is 278497004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194198 + ... + 196250.

It is an arithmetic number, because the mean of its divisors is an integer number (24540165).

Almost surely, 2^400794872 is an apocalyptic number.

It is an amenable number.

400794872 is a deficient number, since it is larger than the sum of its proper divisors (384490408).

400794872 is a wasteful number, since it uses less digits than its factorization.

400794872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3143 (or 3139 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 400794872 is about 20019.8619375859. The cubic root of 400794872 is about 737.2940323806.

The spelling of 400794872 in words is "four hundred million, seven hundred ninety-four thousand, eight hundred seventy-two".