490855440 has 80 divisors (see below), whose sum is σ = 1540972800. Its totient is φ = 129232896.

The previous prime is 490855307. The next prime is 490855483. The reversal of 490855440 is 44558094.

It is a tau number, because it is divible by the number of its divisors (80).

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, 6016 + ... + 31904.

It is an arithmetic number, because the mean of its divisors is an integer number (19262160).

Almost surely, 2^490855440 is an apocalyptic number.

490855440 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 490855440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (770486400).

490855440 is an abundant number, since it is smaller than the sum of its proper divisors (1050117360).

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

490855440 is a wasteful number, since it uses less digits than its factorization.

490855440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25984 (or 25978 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 490855440 is about 22155.2576152930. The cubic root of 490855440 is about 788.8320293462.

The spelling of 490855440 in words is "four hundred ninety million, eight hundred fifty-five thousand, four hundred forty".