400249964 has 6 divisors (see below), whose sum is σ = 700437444. Its totient is φ = 200124980.

The previous prime is 400249961. The next prime is 400249973. The reversal of 400249964 is 469942004.

It is not an unprimeable number, because it can be changed into a prime (400249961) by changing a digit.

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 as a sum of consecutive naturals, namely, 50031242 + ... + 50031249.

It is an arithmetic number, because the mean of its divisors is an integer number (116739574).

Almost surely, 2^400249964 is an apocalyptic number.

It is an amenable number.

400249964 is a deficient number, since it is larger than the sum of its proper divisors (300187480).

400249964 is a wasteful number, since it uses less digits than its factorization.

400249964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100062495 (or 100062493 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 400249964 is about 20006.2481240237. The cubic root of 400249964 is about 736.9597469772.

The spelling of 400249964 in words is "four hundred million, two hundred forty-nine thousand, nine hundred sixty-four".