477982979 has 4 divisors (see below), whose sum is σ = 478188984. Its totient is φ = 477776976.

The previous prime is 477982963. The next prime is 477983003. The reversal of 477982979 is 979289774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 979289774 = 2 ⋅489644887.

It is a cyclic number.

It is not a de Polignac number, because 477982979 - 2⁴ = 477982963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477982919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 99482 + ... + 104175.

It is an arithmetic number, because the mean of its divisors is an integer number (119547246).

Almost surely, 2^477982979 is an apocalyptic number.

477982979 is a deficient number, since it is larger than the sum of its proper divisors (206005).

477982979 is a wasteful number, since it uses less digits than its factorization.

477982979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206004.

The product of its digits is 16003008, while the sum is 62.

The square root of 477982979 is about 21862.8218444006. The cubic root of 477982979 is about 781.8752703650.

The spelling of 477982979 in words is "four hundred seventy-seven million, nine hundred eighty-two thousand, nine hundred seventy-nine".