400793990 has 32 divisors (see below), whose sum is σ = 746353440. Its totient is φ = 154842624.

The previous prime is 400793963. The next prime is 400794001. The reversal of 400793990 is 99397004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47534 + ... + 55326.

It is an arithmetic number, because the mean of its divisors is an integer number (23323545).

Almost surely, 2^400793990 is an apocalyptic number.

400793990 is a deficient number, since it is larger than the sum of its proper divisors (345559450).

400793990 is a wasteful number, since it uses less digits than its factorization.

400793990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 400793990 is about 20019.8399094498. The cubic root of 400793990 is about 737.2934915439.

The spelling of 400793990 in words is "four hundred million, seven hundred ninety-three thousand, nine hundred ninety".