99989165 has 8 divisors (see below), whose sum is σ = 125203968. Its totient is φ = 76513360.

The previous prime is 99989159. The next prime is 99989171. The reversal of 99989165 is 56198999.

It is an interprime number because it is at equal distance from previous prime (99989159) and next prime (99989171).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99989165 - 2⁶ = 99989101 is a prime.

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 99989165.

It is a congruent number.

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, 434621 + ... + 434850.

It is an arithmetic number, because the mean of its divisors is an integer number (15650496).

Almost surely, 2^99989165 is an apocalyptic number.

It is an amenable number.

99989165 is a deficient number, since it is larger than the sum of its proper divisors (25214803).

99989165 is a wasteful number, since it uses less digits than its factorization.

99989165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869499.

The product of its digits is 1574640, while the sum is 56.

The square root of 99989165 is about 9999.4582353246. The cubic root of 99989165 is about 464.1421188841.

The spelling of 99989165 in words is "ninety-nine million, nine hundred eighty-nine thousand, one hundred sixty-five".