990320177 has 64 divisors (see below), whose sum is σ = 1337057280. Its totient is φ = 710899200.

The previous prime is 990320171. The next prime is 990320179. The reversal of 990320177 is 771023099.

It is not a de Polignac number, because 990320177 - 2⁶ = 990320113 is a prime.

It is a super-2 number, since 2×990320177² = 1961468105946622658, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 990320177.

It is not an unprimeable number, because it can be changed into a prime (990320171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9614708 + ... + 9614810.

It is an arithmetic number, because the mean of its divisors is an integer number (20891520).

Almost surely, 2^990320177 is an apocalyptic number.

It is an amenable number.

990320177 is a deficient number, since it is larger than the sum of its proper divisors (346737103).

990320177 is a wasteful number, since it uses less digits than its factorization.

990320177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 990320177 is about 31469.3529803204. The cubic root of 990320177 is about 996.7629249854.

The spelling of 990320177 in words is "nine hundred ninety million, three hundred twenty thousand, one hundred seventy-seven".