400688608 has 12 divisors (see below), whose sum is σ = 788855760. Its totient is φ = 200344288.

The previous prime is 400688599. The next prime is 400688633. The reversal of 400688608 is 806886004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6260728 + ... + 6260791.

It is an arithmetic number, because the mean of its divisors is an integer number (65737980).

Almost surely, 2^400688608 is an apocalyptic number.

It is an amenable number.

400688608 is a deficient number, since it is larger than the sum of its proper divisors (388167152).

400688608 is a wasteful number, since it uses less digits than its factorization.

400688608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12521529 (or 12521521 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 40.

The square root of 400688608 is about 20017.2077972928. The cubic root of 400688608 is about 737.2288662622.

The spelling of 400688608 in words is "four hundred million, six hundred eighty-eight thousand, six hundred eight".