99169081 has 4 divisors (see below), whose sum is σ = 108184464. Its totient is φ = 90153700.

The previous prime is 99169079. The next prime is 99169111. The reversal of 99169081 is 18096199.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99169081 - 2¹ = 99169079 is a prime.

It is a super-2 number, since 2×99169081² = 19669013252769122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99169001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4507675 + ... + 4507696.

It is an arithmetic number, because the mean of its divisors is an integer number (27046116).

Almost surely, 2^99169081 is an apocalyptic number.

It is an amenable number.

99169081 is a deficient number, since it is larger than the sum of its proper divisors (9015383).

99169081 is a wasteful number, since it uses less digits than its factorization.

99169081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9015382.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 99169081 is about 9958.3673862737. The cubic root of 99169081 is about 462.8697112980.

The spelling of 99169081 in words is "ninety-nine million, one hundred sixty-nine thousand, eighty-one".