490997140 has 24 divisors (see below), whose sum is σ = 1056244392. Its totient is φ = 191608320.

The previous prime is 490997137. The next prime is 490997161. The reversal of 490997140 is 41799094.

It can be written as a sum of positive squares in 4 ways, for example, as 11737476 + 479259664 = 3426^2 + 21892^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 298569 + ... + 300208.

It is an arithmetic number, because the mean of its divisors is an integer number (44010183).

Almost surely, 2^490997140 is an apocalyptic number.

It is an amenable number.

490997140 is an abundant number, since it is smaller than the sum of its proper divisors (565247252).

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

490997140 is a wasteful number, since it uses less digits than its factorization.

490997140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598827 (or 598825 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 490997140 is about 22158.4552710698. The cubic root of 490997140 is about 788.9079286404.

The spelling of 490997140 in words is "four hundred ninety million, nine hundred ninety-seven thousand, one hundred forty".