400852458 has 12 divisors (see below), whose sum is σ = 868513698. Its totient is φ = 133617480.

The previous prime is 400852457. The next prime is 400852477. The reversal of 400852458 is 854258004.

400852458 is a `hidden beast` number, since 400 + 8 + 5 + 245 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 248157009 + 152695449 = 15753^2 + 12357^2 .

It is not an unprimeable number, because it can be changed into a prime (400852453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11134773 + ... + 11134808.

Almost surely, 2^400852458 is an apocalyptic number.

400852458 is an abundant number, since it is smaller than the sum of its proper divisors (467661240).

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

400852458 is a wasteful number, since it uses less digits than its factorization.

400852458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22269589 (or 22269586 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 400852458 is about 20021.3001076354. The cubic root of 400852458 is about 737.3293420314.

The spelling of 400852458 in words is "four hundred million, eight hundred fifty-two thousand, four hundred fifty-eight".