400636612 has 12 divisors (see below), whose sum is σ = 701910720. Its totient is φ = 200090696.

The previous prime is 400636597. The next prime is 400636619. The reversal of 400636612 is 216636004.

It is not an unprimeable number, because it can be changed into a prime (400636619) 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, 52912 + ... + 60007.

It is an arithmetic number, because the mean of its divisors is an integer number (58492560).

Almost surely, 2^400636612 is an apocalyptic number.

It is an amenable number.

400636612 is a deficient number, since it is larger than the sum of its proper divisors (301274108).

400636612 is a wasteful number, since it uses less digits than its factorization.

400636612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113810 (or 113808 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 400636612 is about 20015.9089726148. The cubic root of 400636612 is about 737.1969756539.

The spelling of 400636612 in words is "four hundred million, six hundred thirty-six thousand, six hundred twelve".