491900 has 18 divisors (see below), whose sum is σ = 1067640. Its totient is φ = 196720.

The previous prime is 491899. The next prime is 491923. The reversal of 491900 is 9194.

It is a super-2 number, since 2×491900² = 483931220000, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 491900.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2360 + ... + 2559.

2⁴⁹¹⁹⁰⁰ is an apocalyptic number.

It is an amenable number.

491900 is an abundant number, since it is smaller than the sum of its proper divisors (575740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

491900 is a wasteful number, since it uses less digits than its factorization.

491900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4933 (or 4926 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 491900 is about 701.3558298040. The cubic root of 491900 is about 78.9391188261.

The spelling of 491900 in words is "four hundred ninety-one thousand, nine hundred".