408879780 has 24 divisors (see below), whose sum is σ = 1144863552. Its totient is φ = 109034592.

The previous prime is 408879773. The next prime is 408879799. The reversal of 408879780 is 87978804.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3407272 + ... + 3407391.

It is an arithmetic number, because the mean of its divisors is an integer number (47702648).

Almost surely, 2^408879780 is an apocalyptic number.

It is an amenable number.

408879780 is an abundant number, since it is smaller than the sum of its proper divisors (735983772).

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

408879780 is a wasteful number, since it uses less digits than its factorization.

408879780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6814675 (or 6814673 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 408879780 is about 20220.7759495030. The cubic root of 408879780 is about 742.2186760873.

The spelling of 408879780 in words is "four hundred eight million, eight hundred seventy-nine thousand, seven hundred eighty".