139388094979 has 8 divisors (see below), whose sum is σ = 159553142528. Its totient is φ = 119286163080.

The previous prime is 139388094973. The next prime is 139388094983. The reversal of 139388094979 is 979490883931.

It is a happy number.

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

It is not a de Polignac number, because 139388094979 - 2⁵ = 139388094947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139388094973) 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, 15774177 + ... + 15783010.

It is an arithmetic number, because the mean of its divisors is an integer number (19944142816).

Almost surely, 2^139388094979 is an apocalyptic number.

139388094979 is a deficient number, since it is larger than the sum of its proper divisors (20165047549).

139388094979 is an equidigital number, since it uses as much as digits as its factorization.

139388094979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31557825.

The product of its (nonzero) digits is 105815808, while the sum is 70.

The spelling of 139388094979 in words is "one hundred thirty-nine billion, three hundred eighty-eight million, ninety-four thousand, nine hundred seventy-nine".