99131853 has 4 divisors (see below), whose sum is σ = 132175808. Its totient is φ = 66087900.

The previous prime is 99131827. The next prime is 99131861. The reversal of 99131853 is 35813199.

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, and also an emirpimes, since its reverse is a distinct semiprime: 35813199 = 3 ⋅11937733.

It is not a de Polignac number, because 99131853 - 2⁸ = 99131597 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 (99151853) 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, 16521973 + ... + 16521978.

It is an arithmetic number, because the mean of its divisors is an integer number (33043952).

Almost surely, 2^99131853 is an apocalyptic number.

It is an amenable number.

99131853 is a deficient number, since it is larger than the sum of its proper divisors (33043955).

99131853 is a wasteful number, since it uses less digits than its factorization.

99131853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33043954.

The product of its digits is 29160, while the sum is 39.

The square root of 99131853 is about 9956.4980289256. The cubic root of 99131853 is about 462.8117837325.

The spelling of 99131853 in words is "ninety-nine million, one hundred thirty-one thousand, eight hundred fifty-three".