99130939 has 4 divisors (see below), whose sum is σ = 99450000. Its totient is φ = 98811880.

The previous prime is 99130931. The next prime is 99130949. The reversal of 99130939 is 93903199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93903199 = 13 ⋅7223323.

It is a cyclic number.

It is not a de Polignac number, because 99130939 - 2³ = 99130931 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99130895 and 99130904.

It is not an unprimeable number, because it can be changed into a prime (99130931) 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, 159064 + ... + 159685.

It is an arithmetic number, because the mean of its divisors is an integer number (24862500).

Almost surely, 2^99130939 is an apocalyptic number.

99130939 is a deficient number, since it is larger than the sum of its proper divisors (319061).

99130939 is a wasteful number, since it uses less digits than its factorization.

99130939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319060.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 99130939 is about 9956.4521291472. The cubic root of 99130939 is about 462.8103613465.

The spelling of 99130939 in words is "ninety-nine million, one hundred thirty thousand, nine hundred thirty-nine".