400664356 has 12 divisors (see below), whose sum is σ = 701456560. Its totient is φ = 200248200.

The previous prime is 400664351. The next prime is 400664357. The reversal of 400664356 is 653466004.

It is not an unprimeable number, because it can be changed into a prime (400664351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9570 + ... + 29881.

Almost surely, 2^400664356 is an apocalyptic number.

It is an amenable number.

400664356 is a deficient number, since it is larger than the sum of its proper divisors (300792204).

400664356 is a wasteful number, since it uses less digits than its factorization.

400664356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41994 (or 41992 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

The square root of 400664356 is about 20016.6020093322. The cubic root of 400664356 is about 737.2139921723.

The spelling of 400664356 in words is "four hundred million, six hundred sixty-four thousand, three hundred fifty-six".