490440 has 64 divisors (see below), whose sum is σ = 1517760. Its totient is φ = 126720.

The previous prime is 490421. The next prime is 490453. The reversal of 490440 is 44094.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7287 + ... + 7353.

It is an arithmetic number, because the mean of its divisors is an integer number (23715).

2⁴⁹⁰⁴⁴⁰ is an apocalyptic number.

490440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (758880).

490440 is an abundant number, since it is smaller than the sum of its proper divisors (1027320).

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

490440 is a wasteful number, since it uses less digits than its factorization.

490440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 490440 is about 700.3142151920. The cubic root of 490440 is about 78.8609421460.

The spelling of 490440 in words is "four hundred ninety thousand, four hundred forty".