400462187172 has 48 divisors (see below), whose sum is σ = 977773108032. Its totient is φ = 127429061760.

The previous prime is 400462187129. The next prime is 400462187197. The reversal of 400462187172 is 271781264004.

It is a super-2 number, since 2×400462187172² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8485354 + ... + 8532417.

It is an arithmetic number, because the mean of its divisors is an integer number (20370273084).

Almost surely, 2^400462187172 is an apocalyptic number.

It is an amenable number.

400462187172 is an abundant number, since it is smaller than the sum of its proper divisors (577310920860).

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

400462187172 is a wasteful number, since it uses less digits than its factorization.

400462187172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17017868 (or 17017866 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 42.

The spelling of 400462187172 in words is "four hundred billion, four hundred sixty-two million, one hundred eighty-seven thousand, one hundred seventy-two".