409993912 has 8 divisors (see below), whose sum is σ = 768738600. Its totient is φ = 204996952.

The previous prime is 409993907. The next prime is 409993921. The reversal of 409993912 is 219399904.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25624612 + ... + 25624627.

It is an arithmetic number, because the mean of its divisors is an integer number (96092325).

Almost surely, 2^409993912 is an apocalyptic number.

It is an amenable number.

409993912 is a deficient number, since it is larger than the sum of its proper divisors (358744688).

409993912 is a wasteful number, since it uses less digits than its factorization.

409993912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51249245 (or 51249241 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 46.

The square root of 409993912 is about 20248.3063983139. The cubic root of 409993912 is about 742.8922070938.

The spelling of 409993912 in words is "four hundred nine million, nine hundred ninety-three thousand, nine hundred twelve".