477931491 has 12 divisors (see below), whose sum is σ = 726679720. Its totient is φ = 301851360.

The previous prime is 477931483. The next prime is 477931501. The reversal of 477931491 is 194139774.

477931491 is a `hidden beast` number, since 4 + 77 + 93 + 1 + 491 = 666.

It is not a de Polignac number, because 477931491 - 2³ = 477931483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (477931451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1397290 + ... + 1397631.

Almost surely, 2^477931491 is an apocalyptic number.

477931491 is a deficient number, since it is larger than the sum of its proper divisors (248748229).

477931491 is a wasteful number, since it uses less digits than its factorization.

477931491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2794946 (or 2794943 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 477931491 is about 21861.6442885708. The cubic root of 477931491 is about 781.8471950002.

It can be divided in two parts, 47793 and 1491, that added together give a square (49284 = 222²).

The spelling of 477931491 in words is "four hundred seventy-seven million, nine hundred thirty-one thousand, four hundred ninety-one".