408666964 has 12 divisors (see below), whose sum is σ = 717750964. Its totient is φ = 203595264.

The previous prime is 408666959. The next prime is 408666971. The reversal of 408666964 is 469666804.

It can be written as a sum of positive squares in 2 ways, for example, as 106254864 + 302412100 = 10308^2 + 17390^2 .

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183309 + ... + 185524.

Almost surely, 2^408666964 is an apocalyptic number.

It is an amenable number.

408666964 is a deficient number, since it is larger than the sum of its proper divisors (309084000).

408666964 is a wasteful number, since it uses less digits than its factorization.

408666964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369114 (or 369112 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The square root of 408666964 is about 20215.5129541647. The cubic root of 408666964 is about 742.0898823847.

The spelling of 408666964 in words is "four hundred eight million, six hundred sixty-six thousand, nine hundred sixty-four".