490561974 has 64 divisors (see below), whose sum is σ = 1274887680. Its totient is φ = 136896480.

The previous prime is 490561961. The next prime is 490561991. The reversal of 490561974 is 479165094.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1164 + ... + 31344.

It is an arithmetic number, because the mean of its divisors is an integer number (19920120).

Almost surely, 2^490561974 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 490561974, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (637443840).

490561974 is an abundant number, since it is smaller than the sum of its proper divisors (784325706).

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

490561974 is a wasteful number, since it uses less digits than its factorization.

490561974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30242 (or 30236 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 490561974 is about 22148.6336824645. The cubic root of 490561974 is about 788.6747926045.

The spelling of 490561974 in words is "four hundred ninety million, five hundred sixty-one thousand, nine hundred seventy-four".