99268591 has 4 divisors (see below), whose sum is σ = 99375472. Its totient is φ = 99161712.

The previous prime is 99268583. The next prime is 99268633. The reversal of 99268591 is 19586299.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19586299 = 3083 ⋅6353.

It is a cyclic number.

It is not a de Polignac number, because 99268591 - 2³ = 99268583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99268511) 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, 52035 + ... + 53908.

It is an arithmetic number, because the mean of its divisors is an integer number (24843868).

Almost surely, 2^99268591 is an apocalyptic number.

99268591 is a deficient number, since it is larger than the sum of its proper divisors (106881).

99268591 is a wasteful number, since it uses less digits than its factorization.

99268591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106880.

The product of its digits is 349920, while the sum is 49.

The square root of 99268591 is about 9963.3624344395. The cubic root of 99268591 is about 463.0244798573.

The spelling of 99268591 in words is "ninety-nine million, two hundred sixty-eight thousand, five hundred ninety-one".