139874397717 has 8 divisors (see below), whose sum is σ = 186504649696. Its totient is φ = 93246872112.

The previous prime is 139874397713. The next prime is 139874397721. The reversal of 139874397717 is 717793478931.

It is an interprime number because it is at equal distance from previous prime (139874397713) and next prime (139874397721).

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

It is not a de Polignac number, because 139874397717 - 2² = 139874397713 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139874397713) 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, 558718 + ... + 769359.

It is an arithmetic number, because the mean of its divisors is an integer number (23313081212).

Almost surely, 2^139874397717 is an apocalyptic number.

It is an amenable number.

139874397717 is a deficient number, since it is larger than the sum of its proper divisors (46630251979).

139874397717 is a wasteful number, since it uses less digits than its factorization.

139874397717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363187.

The product of its digits is 56010528, while the sum is 66.

The spelling of 139874397717 in words is "one hundred thirty-nine billion, eight hundred seventy-four million, three hundred ninety-seven thousand, seven hundred seventeen".