478779716 has 12 divisors (see below), whose sum is σ = 857350032. Its totient is φ = 233822568.

The previous prime is 478779703. The next prime is 478779731. The reversal of 478779716 is 617977874.

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, 1391630 + ... + 1391973.

It is an arithmetic number, because the mean of its divisors is an integer number (71445836).

Almost surely, 2^478779716 is an apocalyptic number.

It is an amenable number.

478779716 is a deficient number, since it is larger than the sum of its proper divisors (378570316).

478779716 is a wasteful number, since it uses less digits than its factorization.

478779716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783650 (or 2783648 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 56.

The square root of 478779716 is about 21881.0355330821. The cubic root of 478779716 is about 782.3094581773.

The spelling of 478779716 in words is "four hundred seventy-eight million, seven hundred seventy-nine thousand, seven hundred sixteen".