99369691 has 4 divisors (see below), whose sum is σ = 101793384. Its totient is φ = 96946000.

The previous prime is 99369667. The next prime is 99369707. The reversal of 99369691 is 19696399.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99369691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99369091) 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, 1211785 + ... + 1211866.

It is an arithmetic number, because the mean of its divisors is an integer number (25448346).

Almost surely, 2^99369691 is an apocalyptic number.

99369691 is a deficient number, since it is larger than the sum of its proper divisors (2423693).

99369691 is a wasteful number, since it uses less digits than its factorization.

99369691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423692.

The product of its digits is 708588, while the sum is 52.

The square root of 99369691 is about 9968.4347316918. The cubic root of 99369691 is about 463.1816154683.

The spelling of 99369691 in words is "ninety-nine million, three hundred sixty-nine thousand, six hundred ninety-one".