400900612 has 24 divisors (see below), whose sum is σ = 810072704. Its totient is φ = 170042112.

The previous prime is 400900607. The next prime is 400900637. The reversal of 400900612 is 216009004.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71088 + ... + 76519.

Almost surely, 2^400900612 is an apocalyptic number.

It is an amenable number.

400900612 is an abundant number, since it is smaller than the sum of its proper divisors (409172092).

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

400900612 is a wasteful number, since it uses less digits than its factorization.

400900612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147715 (or 147713 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 400900612 is about 20022.5026407789. The cubic root of 400900612 is about 737.3588657250.

Adding to 400900612 its reverse (216009004), we get a palindrome (616909616).

The spelling of 400900612 in words is "four hundred million, nine hundred thousand, six hundred twelve".