990611090 has 16 divisors (see below), whose sum is σ = 2037828672. Its totient is φ = 339638064.

The previous prime is 990611077. The next prime is 990611119. The reversal of 990611090 is 90116099.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 990611090.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7075724 + ... + 7075863.

It is an arithmetic number, because the mean of its divisors is an integer number (127364292).

Almost surely, 2^990611090 is an apocalyptic number.

990611090 is an abundant number, since it is smaller than the sum of its proper divisors (1047217582).

990611090 is a wasteful number, since it uses less digits than its factorization.

990611090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151601.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 990611090 is about 31473.9748045905. The cubic root of 990611090 is about 996.8605172963.

The spelling of 990611090 in words is "nine hundred ninety million, six hundred eleven thousand, ninety".