409879602 has 80 divisors (see below), whose sum is σ = 1017178272. Its totient is φ = 122316480.

The previous prime is 409879601. The next prime is 409879643. The reversal of 409879602 is 206978904.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (409879601) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 117678 + ... + 121110.

Almost surely, 2^409879602 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 409879602, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (508589136).

409879602 is an abundant number, since it is smaller than the sum of its proper divisors (607298670).

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

409879602 is a wasteful number, since it uses less digits than its factorization.

409879602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3525 (or 3516 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 409879602 is about 20245.4834963258. The cubic root of 409879602 is about 742.8231589941.

The spelling of 409879602 in words is "four hundred nine million, eight hundred seventy-nine thousand, six hundred two".