99381165 has 16 divisors (see below), whose sum is σ = 171241728. Its totient is φ = 48926016.

The previous prime is 99381151. The next prime is 99381169. The reversal of 99381165 is 56118399.

It is not a de Polignac number, because 99381165 - 2⁶ = 99381101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99381169) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 254629 + ... + 255018.

It is an arithmetic number, because the mean of its divisors is an integer number (10702608).

Almost surely, 2^99381165 is an apocalyptic number.

It is an amenable number.

99381165 is a deficient number, since it is larger than the sum of its proper divisors (71860563).

99381165 is a wasteful number, since it uses less digits than its factorization.

99381165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509668.

The product of its digits is 58320, while the sum is 42.

The square root of 99381165 is about 9969.0102317131. The cubic root of 99381165 is about 463.1994423035.

The spelling of 99381165 in words is "ninety-nine million, three hundred eighty-one thousand, one hundred sixty-five".