395779880 has 32 divisors (see below), whose sum is σ = 937375200. Its totient is φ = 149979456.

The previous prime is 395779841. The next prime is 395779897. The reversal of 395779880 is 88977593.

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, 259622 + ... + 261141.

It is an arithmetic number, because the mean of its divisors is an integer number (29292975).

Almost surely, 2^395779880 is an apocalyptic number.

It is an amenable number.

395779880 is an abundant number, since it is smaller than the sum of its proper divisors (541595320).

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

395779880 is a wasteful number, since it uses less digits than its factorization.

395779880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 520793 (or 520789 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 56.

The square root of 395779880 is about 19894.2172502464. The cubic root of 395779880 is about 734.2059575428.

The spelling of 395779880 in words is "three hundred ninety-five million, seven hundred seventy-nine thousand, eight hundred eighty".