400790308 has 24 divisors (see below), whose sum is σ = 710851680. Its totient is φ = 197708160.

The previous prime is 400790279. The next prime is 400790309. The reversal of 400790308 is 803097004.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 400790308.

It is not an unprimeable number, because it can be changed into a prime (400790309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91660 + ... + 95932.

It is an arithmetic number, because the mean of its divisors is an integer number (29618820).

Almost surely, 2^400790308 is an apocalyptic number.

It is an amenable number.

400790308 is a deficient number, since it is larger than the sum of its proper divisors (310061372).

400790308 is a wasteful number, since it uses less digits than its factorization.

400790308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4587 (or 4585 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 400790308 is about 20019.7479504613. The cubic root of 400790308 is about 737.2912337564.

The spelling of 400790308 in words is "four hundred million, seven hundred ninety thousand, three hundred eight".