409921228 has 6 divisors (see below), whose sum is σ = 717362156. Its totient is φ = 204960612.

The previous prime is 409921223. The next prime is 409921229. The reversal of 409921228 is 822129904.

It is not an unprimeable number, because it can be changed into a prime (409921223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51240150 + ... + 51240157.

Almost surely, 2^409921228 is an apocalyptic number.

It is an amenable number.

409921228 is a deficient number, since it is larger than the sum of its proper divisors (307440928).

409921228 is a wasteful number, since it uses less digits than its factorization.

409921228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102480311 (or 102480309 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 409921228 is about 20246.5115019847. The cubic root of 409921228 is about 742.8483043538.

The spelling of 409921228 in words is "four hundred nine million, nine hundred twenty-one thousand, two hundred twenty-eight".