400737164 has 6 divisors (see below), whose sum is σ = 701290044. Its totient is φ = 200368580.

The previous prime is 400737163. The next prime is 400737173. The reversal of 400737164 is 461737004.

It is a happy number.

It is a super-2 number, since 2×400737164² = 321180549221525792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400737164.

It is not an unprimeable number, because it can be changed into a prime (400737163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50092142 + ... + 50092149.

It is an arithmetic number, because the mean of its divisors is an integer number (116881674).

Almost surely, 2^400737164 is an apocalyptic number.

It is an amenable number.

400737164 is a deficient number, since it is larger than the sum of its proper divisors (300552880).

400737164 is a wasteful number, since it uses less digits than its factorization.

400737164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100184295 (or 100184293 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 400737164 is about 20018.4206170217. The cubic root of 400737164 is about 737.2586445308.

The spelling of 400737164 in words is "four hundred million, seven hundred thirty-seven thousand, one hundred sixty-four".