402870369 has 32 divisors (see below), whose sum is σ = 647460864. Its totient is φ = 219802880.

The previous prime is 402870359. The next prime is 402870383. The reversal of 402870369 is 963078204.

It is not a de Polignac number, because 402870369 - 2⁷ = 402870241 is a prime.

It is a super-2 number, since 2×402870369² = 324609068436392322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402870329) 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, 2709 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (20233152).

Almost surely, 2^402870369 is an apocalyptic number.

It is an amenable number.

402870369 is a deficient number, since it is larger than the sum of its proper divisors (244590495).

402870369 is a wasteful number, since it uses less digits than its factorization.

402870369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31277.

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 402870369 is about 20071.6309501744. The cubic root of 402870369 is about 738.5645224221.

The spelling of 402870369 in words is "four hundred two million, eight hundred seventy thousand, three hundred sixty-nine".