400369995400 has 48 divisors (see below), whose sum is σ = 985616732340. Its totient is φ = 150727526400.

The previous prime is 400369995359. The next prime is 400369995407. The reversal of 400369995400 is 4599963004.

It can be written as a sum of positive squares in 6 ways, for example, as 292527376164 + 107842619236 = 540858^2 + 328394^2 .

It is a super-2 number, since 2×400369995400² (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 11 ways as a sum of consecutive naturals, for example, 58874541 + ... + 58881340.

Almost surely, 2^400369995400 is an apocalyptic number.

400369995400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400369995400 is an abundant number, since it is smaller than the sum of its proper divisors (585246736940).

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

400369995400 is a wasteful number, since it uses less digits than its factorization.

400369995400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117755914 (or 117755905 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The spelling of 400369995400 in words is "four hundred billion, three hundred sixty-nine million, nine hundred ninety-five thousand, four hundred".