8991579490 has 16 divisors (see below), whose sum is σ = 16197063552. Its totient is φ = 3593916144.

The previous prime is 8991579461. The next prime is 8991579503. The reversal of 8991579490 is 949751998.

8991579490 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325524 + ... + 352063.

It is an arithmetic number, because the mean of its divisors is an integer number (1012316472).

Almost surely, 2^8991579490 is an apocalyptic number.

8991579490 is a deficient number, since it is larger than the sum of its proper divisors (7205484062).

8991579490 is a wasteful number, since it uses less digits than its factorization.

8991579490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678921.

The product of its (nonzero) digits is 7348320, while the sum is 61.

The square root of 8991579490 is about 94823.9394351448. The cubic root of 8991579490 is about 2079.4349033480.

The spelling of 8991579490 in words is "eight billion, nine hundred ninety-one million, five hundred seventy-nine thousand, four hundred ninety".