490931 has 12 divisors (see below), whose sum is σ = 586872. Its totient is φ = 409248.

The previous prime is 490927. The next prime is 490937. The reversal of 490931 is 139094.

It is a happy number.

It is not a de Polignac number, because 490931 - 2² = 490927 is a prime.

It is a super-2 number, since 2×490931² = 482026493522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490931.

It is not an unprimeable number, because it can be changed into a prime (490937) 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, 1991 + ... + 2223.

It is an arithmetic number, because the mean of its divisors is an integer number (48906).

2⁴⁹⁰⁹³¹ is an apocalyptic number.

490931 is a deficient number, since it is larger than the sum of its proper divisors (95941).

490931 is a wasteful number, since it uses less digits than its factorization.

490931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 490931 is about 700.6646844247. The cubic root of 490931 is about 78.8872503646.

It can be divided in two parts, 49093 and 1, that added together give a palindrome (49094).

The spelling of 490931 in words is "four hundred ninety thousand, nine hundred thirty-one".