99123157 has 8 divisors (see below), whose sum is σ = 113400000. Its totient is φ = 84875424.

The previous prime is 99123149. The next prime is 99123161. The reversal of 99123157 is 75132199.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99123157 - 2³ = 99123149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99120157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594 + ... + 14092.

It is an arithmetic number, because the mean of its divisors is an integer number (14175000).

Almost surely, 2^99123157 is an apocalyptic number.

It is an amenable number.

99123157 is a deficient number, since it is larger than the sum of its proper divisors (14276843).

99123157 is a wasteful number, since it uses less digits than its factorization.

99123157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14555.

The product of its digits is 17010, while the sum is 37.

The square root of 99123157 is about 9956.0613196183. The cubic root of 99123157 is about 462.7982504808.

It can be divided in two parts, 99 and 123157, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 99123157 in words is "ninety-nine million, one hundred twenty-three thousand, one hundred fifty-seven".