400389202 has 16 divisors (see below), whose sum is σ = 636296472. Its totient is φ = 188304640.

The previous prime is 400389181. The next prime is 400389229. The reversal of 400389202 is 202983004.

It can be written as a sum of positive squares in 4 ways, for example, as 366760801 + 33628401 = 19151^2 + 5799^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86868 + ... + 91360.

Almost surely, 2^400389202 is an apocalyptic number.

400389202 is a deficient number, since it is larger than the sum of its proper divisors (235907270).

400389202 is a wasteful number, since it uses less digits than its factorization.

400389202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7133.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 400389202 is about 20009.7276843040. The cubic root of 400389202 is about 737.0451943342.

The spelling of 400389202 in words is "four hundred million, three hundred eighty-nine thousand, two hundred two".