99361089 has 24 divisors (see below), whose sum is σ = 154600160. Its totient is φ = 61290432.

The previous prime is 99361069. The next prime is 99361091. The reversal of 99361089 is 98016399.

It is not a de Polignac number, because 99361089 - 2⁵ = 99361057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99361049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597 + ... + 14109.

Almost surely, 2^99361089 is an apocalyptic number.

It is an amenable number.

99361089 is a deficient number, since it is larger than the sum of its proper divisors (55239071).

99361089 is a wasteful number, since it uses less digits than its factorization.

99361089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13581 (or 13578 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 45.

The square root of 99361089 is about 9968.0032604329. The cubic root of 99361089 is about 463.1682498797.

It can be divided in two parts, 9936 and 1089, that added together give a square (11025 = 105²).

The spelling of 99361089 in words is "ninety-nine million, three hundred sixty-one thousand, eighty-nine".