990911730 has 32 divisors (see below), whose sum is σ = 2460196800. Its totient is φ = 255131072.

The previous prime is 990911723. The next prime is 990911741. The reversal of 990911730 is 37119099.

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, 568620 + ... + 570359.

It is an arithmetic number, because the mean of its divisors is an integer number (76881150).

Almost surely, 2^990911730 is an apocalyptic number.

990911730 is an abundant number, since it is smaller than the sum of its proper divisors (1469285070).

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

990911730 is a wasteful number, since it uses less digits than its factorization.

990911730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1139018.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 990911730 is about 31478.7504516936. The cubic root of 990911730 is about 996.9613526412.

The spelling of 990911730 in words is "nine hundred ninety million, nine hundred eleven thousand, seven hundred thirty".