400369995402 has 64 divisors (see below), whose sum is σ = 898795462656. Its totient is φ = 118059353280.

The previous prime is 400369995359. The next prime is 400369995407. The reversal of 400369995402 is 204599963004.

It is a super-2 number, since 2×400369995402² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400369995407) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 554728 + ... + 1052835.

It is an arithmetic number, because the mean of its divisors is an integer number (14043679104).

Almost surely, 2^400369995402 is an apocalyptic number.

400369995402 is an abundant number, since it is smaller than the sum of its proper divisors (498425467254).

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

400369995402 is a wasteful number, since it uses less digits than its factorization.

400369995402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1607715.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 400369995402 in words is "four hundred billion, three hundred sixty-nine million, nine hundred ninety-five thousand, four hundred two".