7959700139 has 4 divisors (see below), whose sum is σ = 8010399024. Its totient is φ = 7909001256.

The previous prime is 7959700127. The next prime is 7959700171. The reversal of 7959700139 is 9310079597.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7959700139 - 2⁴ = 7959700123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7959700109) 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, 25349207 + ... + 25349520.

It is an arithmetic number, because the mean of its divisors is an integer number (2002599756).

Almost surely, 2^7959700139 is an apocalyptic number.

7959700139 is a deficient number, since it is larger than the sum of its proper divisors (50698885).

7959700139 is a wasteful number, since it uses less digits than its factorization.

7959700139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50698884.

The product of its (nonzero) digits is 535815, while the sum is 50.

The square root of 7959700139 is about 89217.1515965400. The cubic root of 7959700139 is about 1996.6360232525.

The spelling of 7959700139 in words is "seven billion, nine hundred fifty-nine million, seven hundred thousand, one hundred thirty-nine".