9139997913 has 8 divisors (see below), whose sum is σ = 12470074848. Its totient is φ = 5951626464.

The previous prime is 9139997869. The next prime is 9139997953. The reversal of 9139997913 is 3197999319.

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

It is not a de Polignac number, because 9139997913 - 2⁹ = 9139997401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9139997953) 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, 35426220 + ... + 35426477.

It is an arithmetic number, because the mean of its divisors is an integer number (1558759356).

Almost surely, 2^9139997913 is an apocalyptic number.

It is an amenable number.

9139997913 is a deficient number, since it is larger than the sum of its proper divisors (3330076935).

9139997913 is a wasteful number, since it uses less digits than its factorization.

9139997913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70852743.

The product of its digits is 3720087, while the sum is 60.

The square root of 9139997913 is about 95603.3363068465. The cubic root of 9139997913 is about 2090.8138366530.

The spelling of 9139997913 in words is "nine billion, one hundred thirty-nine million, nine hundred ninety-seven thousand, nine hundred thirteen".