409497872 has 20 divisors (see below), whose sum is σ = 906745536. Its totient is φ = 175499040.

The previous prime is 409497871. The next prime is 409497877. The reversal of 409497872 is 278794904.

It is a self number, because there is not a number n which added to its sum of digits gives 409497872.

It is not an unprimeable number, because it can be changed into a prime (409497871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1828004 + ... + 1828227.

Almost surely, 2^409497872 is an apocalyptic number.

It is an amenable number.

409497872 is an abundant number, since it is smaller than the sum of its proper divisors (497247664).

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

409497872 is a wasteful number, since it uses less digits than its factorization.

409497872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3656246 (or 3656240 counting only the distinct ones).

The product of its (nonzero) digits is 1016064, while the sum is 50.

The square root of 409497872 is about 20236.0537654949. The cubic root of 409497872 is about 742.5924847859.

The spelling of 409497872 in words is "four hundred nine million, four hundred ninety-seven thousand, eight hundred seventy-two".