408668860 has 12 divisors (see below), whose sum is σ = 858204648. Its totient is φ = 163467536.

The previous prime is 408668851. The next prime is 408668881. The reversal of 408668860 is 68866804.

It is a self number, because there is not a number n which added to its sum of digits gives 408668860.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10216702 + ... + 10216741.

It is an arithmetic number, because the mean of its divisors is an integer number (71517054).

Almost surely, 2^408668860 is an apocalyptic number.

It is an amenable number.

408668860 is an abundant number, since it is smaller than the sum of its proper divisors (449535788).

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

408668860 is a wasteful number, since it uses less digits than its factorization.

408668860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20433452 (or 20433450 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 408668860 is about 20215.5598487897. The cubic root of 408668860 is about 742.0910300187.

The spelling of 408668860 in words is "four hundred eight million, six hundred sixty-eight thousand, eight hundred sixty".