477990939 has 4 divisors (see below), whose sum is σ = 637321256. Its totient is φ = 318660624.

The previous prime is 477990917. The next prime is 477990943. The reversal of 477990939 is 939099774.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 477990939 - 2¹⁵ = 477958171 is a prime.

It is a super-2 number, since 2×477990939² = 456950675532203442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477990979) 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, 79665154 + ... + 79665159.

It is an arithmetic number, because the mean of its divisors is an integer number (159330314).

Almost surely, 2^477990939 is an apocalyptic number.

477990939 is a deficient number, since it is larger than the sum of its proper divisors (159330317).

477990939 is a wasteful number, since it uses less digits than its factorization.

477990939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159330316.

The product of its (nonzero) digits is 3857868, while the sum is 57.

The square root of 477990939 is about 21863.0038878467. The cubic root of 477990939 is about 781.8796106120.

The spelling of 477990939 in words is "four hundred seventy-seven million, nine hundred ninety thousand, nine hundred thirty-nine".