408279879 has 16 divisors (see below), whose sum is σ = 691267840. Its totient is φ = 233302680.

The previous prime is 408279869. The next prime is 408279901. The reversal of 408279879 is 978972804.

It is a de Polignac number, because none of the positive numbers 2^k-408279879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408279869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1079917 + ... + 1080294.

It is an arithmetic number, because the mean of its divisors is an integer number (43204240).

Almost surely, 2^408279879 is an apocalyptic number.

408279879 is a deficient number, since it is larger than the sum of its proper divisors (282987961).

408279879 is a wasteful number, since it uses less digits than its factorization.

408279879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160227 (or 2160221 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The square root of 408279879 is about 20205.9367266158. The cubic root of 408279879 is about 741.8555084901.

The spelling of 408279879 in words is "four hundred eight million, two hundred seventy-nine thousand, eight hundred seventy-nine".