990516494 has 32 divisors (see below), whose sum is σ = 1645056000. Its totient is φ = 443556000.

The previous prime is 990516491. The next prime is 990516533. The reversal of 990516494 is 494615099.

It is a super-2 number, since 2×990516494² = 1962245849772104072, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (990516491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 494507 + ... + 496505.

It is an arithmetic number, because the mean of its divisors is an integer number (51408000).

Almost surely, 2^990516494 is an apocalyptic number.

990516494 is a deficient number, since it is larger than the sum of its proper divisors (654539506).

990516494 is a wasteful number, since it uses less digits than its factorization.

990516494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2336.

The product of its (nonzero) digits is 349920, while the sum is 47.

The square root of 990516494 is about 31472.4720033238. The cubic root of 990516494 is about 996.8287853616.

The spelling of 990516494 in words is "nine hundred ninety million, five hundred sixteen thousand, four hundred ninety-four".