99890564 has 12 divisors (see below), whose sum is σ = 182409024. Its totient is φ = 47773704.

The previous prime is 99890563. The next prime is 99890569. The reversal of 99890564 is 46509899.

It is not an unprimeable number, because it can be changed into a prime (99890563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 542792 + ... + 542975.

It is an arithmetic number, because the mean of its divisors is an integer number (15200752).

Almost surely, 2^99890564 is an apocalyptic number.

It is an amenable number.

99890564 is a deficient number, since it is larger than the sum of its proper divisors (82518460).

99890564 is a wasteful number, since it uses less digits than its factorization.

99890564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085794 (or 1085792 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The square root of 99890564 is about 9994.5267021505. The cubic root of 99890564 is about 463.9895025865.

The spelling of 99890564 in words is "ninety-nine million, eight hundred ninety thousand, five hundred sixty-four".