400797996 has 24 divisors (see below), whose sum is σ = 940800000. Its totient is φ = 132798672.

The previous prime is 400797983. The next prime is 400798003. The reversal of 400797996 is 699797004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97996 + ... + 102003.

It is an arithmetic number, because the mean of its divisors is an integer number (39200000).

Almost surely, 2^400797996 is an apocalyptic number.

It is an amenable number.

400797996 is an abundant number, since it is smaller than the sum of its proper divisors (540002004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400797996 is a wasteful number, since it uses less digits than its factorization.

400797996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200173 (or 200171 counting only the distinct ones).

The product of its (nonzero) digits is 857304, while the sum is 51.

The square root of 400797996 is about 20019.9399599499. The cubic root of 400797996 is about 737.2959479911.

The spelling of 400797996 in words is "four hundred million, seven hundred ninety-seven thousand, nine hundred ninety-six".