409556172 has 48 divisors (see below), whose sum is σ = 1007596800. Its totient is φ = 129119040.

The previous prime is 409556171. The next prime is 409556179. The reversal of 409556172 is 271655904.

It is a self number, because there is not a number n which added to its sum of digits gives 409556172.

It is not an unprimeable number, because it can be changed into a prime (409556171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190222 + ... + 192362.

It is an arithmetic number, because the mean of its divisors is an integer number (20991600).

Almost surely, 2^409556172 is an apocalyptic number.

It is an amenable number.

409556172 is an abundant number, since it is smaller than the sum of its proper divisors (598040628).

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

409556172 is a wasteful number, since it uses less digits than its factorization.

409556172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3006 (or 3004 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 409556172 is about 20237.4942124760. The cubic root of 409556172 is about 742.6277239494.

The spelling of 409556172 in words is "four hundred nine million, five hundred fifty-six thousand, one hundred seventy-two".