7990719139 has 8 divisors (see below), whose sum is σ = 8608747392. Its totient is φ = 7373170560.

The previous prime is 7990719137. The next prime is 7990719157. The reversal of 7990719139 is 9319170997.

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 7990719139 - 2¹ = 7990719137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7990719139.

It is not an unprimeable number, because it can be changed into a prime (7990719137) 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, 84934 + ... + 152299.

It is an arithmetic number, because the mean of its divisors is an integer number (1076093424).

Almost surely, 2^7990719139 is an apocalyptic number.

7990719139 is a deficient number, since it is larger than the sum of its proper divisors (618028253).

7990719139 is a wasteful number, since it uses less digits than its factorization.

7990719139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239837.

The product of its (nonzero) digits is 964467, while the sum is 55.

The square root of 7990719139 is about 89390.8224539857. The cubic root of 7990719139 is about 1999.2262956460.

The spelling of 7990719139 in words is "seven billion, nine hundred ninety million, seven hundred nineteen thousand, one hundred thirty-nine".