491846877 has 16 divisors (see below), whose sum is σ = 729864000. Its totient is φ = 327357072.

The previous prime is 491846819. The next prime is 491846879. The reversal of 491846877 is 778648194.

It is a happy number.

491846877 is a `hidden beast` number, since 491 + 84 + 6 + 8 + 77 = 666.

It is not a de Polignac number, because 491846877 - 2⁶ = 491846813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491846879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1999 + ... + 31427.

It is an arithmetic number, because the mean of its divisors is an integer number (45616500).

Almost surely, 2^491846877 is an apocalyptic number.

It is an amenable number.

491846877 is a deficient number, since it is larger than the sum of its proper divisors (238017123).

491846877 is a wasteful number, since it uses less digits than its factorization.

491846877 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30057 (or 30051 counting only the distinct ones).

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

The square root of 491846877 is about 22177.6210852291. The cubic root of 491846877 is about 789.3627703320.

The spelling of 491846877 in words is "four hundred ninety-one million, eight hundred forty-six thousand, eight hundred seventy-seven".