400560556 has 12 divisors (see below), whose sum is σ = 764706600. Its totient is φ = 182072960.

The previous prime is 400560553. The next prime is 400560581. The reversal of 400560556 is 655065004.

It is not an unprimeable number, because it can be changed into a prime (400560553) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4551781 + ... + 4551868.

It is an arithmetic number, because the mean of its divisors is an integer number (63725550).

Almost surely, 2^400560556 is an apocalyptic number.

It is an amenable number.

400560556 is a deficient number, since it is larger than the sum of its proper divisors (364146044).

400560556 is a wasteful number, since it uses less digits than its factorization.

400560556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103664 (or 9103662 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 400560556 is about 20014.0089937024. The cubic root of 400560556 is about 737.1503234011.

The spelling of 400560556 in words is "four hundred million, five hundred sixty thousand, five hundred fifty-six".