400560164 has 12 divisors (see below), whose sum is σ = 708857100. Its totient is φ = 198029568.

The previous prime is 400560163. The next prime is 400560169. The reversal of 400560164 is 461065004.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 84787264 + 315772900 = 9208^2 + 17770^2 .

It is not an unprimeable number, because it can be changed into a prime (400560163) 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, 562229 + ... + 562940.

It is an arithmetic number, because the mean of its divisors is an integer number (59071425).

Almost surely, 2^400560164 is an apocalyptic number.

It is an amenable number.

400560164 is a deficient number, since it is larger than the sum of its proper divisors (308296936).

400560164 is a wasteful number, since it uses less digits than its factorization.

400560164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125262 (or 1125260 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 400560164 is about 20013.9992005596. Note that the first 3 decimals coincide. The cubic root of 400560164 is about 737.1500829356.

The spelling of 400560164 in words is "four hundred million, five hundred sixty thousand, one hundred sixty-four".