400089522 has 16 divisors (see below), whose sum is σ = 914490432. Its totient is φ = 114311280.

The previous prime is 400089499. The next prime is 400089533. The reversal of 400089522 is 225980004.

It is a super-2 number, since 2×400089522² = 320143251228376968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 400089522.

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, 4762929 + ... + 4763012.

It is an arithmetic number, because the mean of its divisors is an integer number (57155652).

Almost surely, 2^400089522 is an apocalyptic number.

400089522 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

400089522 is an abundant number, since it is smaller than the sum of its proper divisors (514400910).

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

400089522 is a wasteful number, since it uses less digits than its factorization.

400089522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9525953.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 400089522 is about 20002.2379247923. The cubic root of 400089522 is about 736.8612626059.

The spelling of 400089522 in words is "four hundred million, eighty-nine thousand, five hundred twenty-two".