409215164 has 12 divisors (see below), whose sum is σ = 721354704. Its totient is φ = 203113824.

The previous prime is 409215139. The next prime is 409215203. The reversal of 409215164 is 461512904.

It is a self number, because there is not a number n which added to its sum of digits gives 409215164.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372824 + ... + 373919.

It is an arithmetic number, because the mean of its divisors is an integer number (60112892).

Almost surely, 2^409215164 is an apocalyptic number.

It is an amenable number.

409215164 is a deficient number, since it is larger than the sum of its proper divisors (312139540).

409215164 is a wasteful number, since it uses less digits than its factorization.

409215164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746884 (or 746882 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 409215164 is about 20229.0673042531. The cubic root of 409215164 is about 742.4215558011.

The spelling of 409215164 in words is "four hundred nine million, two hundred fifteen thousand, one hundred sixty-four".