4877978 has 16 divisors (see below), whose sum is σ = 8726400. Its totient is φ = 1999536.

The previous prime is 4877959. The next prime is 4877981. The reversal of 4877978 is 8797784.

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, 7253 + ... + 7896.

It is an arithmetic number, because the mean of its divisors is an integer number (545400).

Almost surely, 2^4877978 is an apocalyptic number.

4877978 is a deficient number, since it is larger than the sum of its proper divisors (3848422).

4877978 is a wasteful number, since it uses less digits than its factorization.

4877978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15181.

The product of its digits is 790272, while the sum is 50.

The square root of 4877978 is about 2208.6144978244. The cubic root of 4877978 is about 169.5950917130.

The spelling of 4877978 in words is "four million, eight hundred seventy-seven thousand, nine hundred seventy-eight".