990486690 has 32 divisors (see below), whose sum is σ = 2417463360. Its totient is φ = 259652544.

The previous prime is 990486689. The next prime is 990486709. The reversal of 990486690 is 96684099.

It is a super-2 number, since 2×990486690² = 1962127766134312200, which contains 22 as substring.

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, 278029 + ... + 281568.

It is an arithmetic number, because the mean of its divisors is an integer number (75545730).

Almost surely, 2^990486690 is an apocalyptic number.

990486690 is an abundant number, since it is smaller than the sum of its proper divisors (1426976670).

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

990486690 is a wasteful number, since it uses less digits than its factorization.

990486690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559666.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 990486690 is about 31471.9985066090. The cubic root of 990486690 is about 996.8187872837.

The spelling of 990486690 in words is "nine hundred ninety million, four hundred eighty-six thousand, six hundred ninety".