99591159 has 4 divisors (see below), whose sum is σ = 132788216. Its totient is φ = 66394104.

The previous prime is 99591143. The next prime is 99591169. The reversal of 99591159 is 95119599.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95119599 = 3 ⋅31706533.

It is not a de Polignac number, because 99591159 - 2⁴ = 99591143 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 (99591169) 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, 16598524 + ... + 16598529.

It is an arithmetic number, because the mean of its divisors is an integer number (33197054).

Almost surely, 2^99591159 is an apocalyptic number.

99591159 is a deficient number, since it is larger than the sum of its proper divisors (33197057).

99591159 is a wasteful number, since it uses less digits than its factorization.

99591159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33197056.

The product of its digits is 164025, while the sum is 48.

The square root of 99591159 is about 9979.5370133088. The cubic root of 99591159 is about 463.5254620733.

The spelling of 99591159 in words is "ninety-nine million, five hundred ninety-one thousand, one hundred fifty-nine".