491877 has 24 divisors (see below), whose sum is σ = 768768. Its totient is φ = 302400.

The previous prime is 491873. The next prime is 491899. The reversal of 491877 is 778194.

It is not a de Polignac number, because 491877 - 2² = 491873 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491873) 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, 11418 + ... + 11460.

It is an arithmetic number, because the mean of its divisors is an integer number (32032).

2⁴⁹¹⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

491877 is a deficient number, since it is larger than the sum of its proper divisors (276891).

491877 is a wasteful number, since it uses less digits than its factorization.

491877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121 (or 118 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 491877 is about 701.3394327998. The cubic root of 491877 is about 78.9378884757.

It can be divided in two parts, 49187 and 7, that added together give a palindrome (49194).

The spelling of 491877 in words is "four hundred ninety-one thousand, eight hundred seventy-seven".