477868491 has 24 divisors (see below), whose sum is σ = 717522624. Its totient is φ = 317821320.

The previous prime is 477868429. The next prime is 477868507. The reversal of 477868491 is 194868774.

It is a happy number.

477868491 is a `hidden beast` number, since 4 + 77 + 86 + 8 + 491 = 666.

It is not a de Polignac number, because 477868491 - 2⁶ = 477868427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (477168491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111376 + ... + 115586.

It is an arithmetic number, because the mean of its divisors is an integer number (29896776).

Almost surely, 2^477868491 is an apocalyptic number.

477868491 is a deficient number, since it is larger than the sum of its proper divisors (239654133).

477868491 is an equidigital number, since it uses as much as digits as its factorization.

477868491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4693 (or 4681 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 477868491 is about 21860.2033613597. The cubic root of 477868491 is about 781.8128396315.

The spelling of 477868491 in words is "four hundred seventy-seven million, eight hundred sixty-eight thousand, four hundred ninety-one".