400317904 has 80 divisors (see below), whose sum is σ = 956510208. Its totient is φ = 158386176.

The previous prime is 400317893. The next prime is 400317937. The reversal of 400317904 is 409713004.

It is a Harshad number since it is a multiple of its sum of digits (28).

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 15 ways as a sum of consecutive naturals, for example, 98929 + ... + 102895.

Almost surely, 2^400317904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400317904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (478255104).

400317904 is an abundant number, since it is smaller than the sum of its proper divisors (556192304).

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

400317904 is a wasteful number, since it uses less digits than its factorization.

400317904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052 (or 4046 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 400317904 is about 20007.9460215186. The cubic root of 400317904 is about 737.0014427648.

The spelling of 400317904 in words is "four hundred million, three hundred seventeen thousand, nine hundred four".