400866696 has 24 divisors (see below), whose sum is σ = 1085680830. Its totient is φ = 133622208.

The previous prime is 400866679. The next prime is 400866703. The reversal of 400866696 is 696668004.

It can be written as a sum of positive squares in only one way, i.e., 316484100 + 84382596 = 17790^2 + 9186^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2783725 + ... + 2783868.

Almost surely, 2^400866696 is an apocalyptic number.

It is an amenable number.

400866696 is an abundant number, since it is smaller than the sum of its proper divisors (684814134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400866696 is a wasteful number, since it uses less digits than its factorization.

400866696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5567605 (or 5567598 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 400866696 is about 20021.6556757926. The cubic root of 400866696 is about 737.3380717362.

The spelling of 400866696 in words is "four hundred million, eight hundred sixty-six thousand, six hundred ninety-six".