139293168389 has 2 divisors, whose sum is σ = 139293168390. Its totient is φ = 139293168388.

The previous prime is 139293168359. The next prime is 139293168431. The reversal of 139293168389 is 983861392931.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 122459403364 + 16833765025 = 349942^2 + 129745^2 .

It is an emirp because it is prime and its reverse (983861392931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139293168389 - 2³⁶ = 70573691653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139293168349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69646584194 + 69646584195.

It is an arithmetic number, because the mean of its divisors is an integer number (69646584195).

Almost surely, 2^139293168389 is an apocalyptic number.

It is an amenable number.

139293168389 is a deficient number, since it is larger than the sum of its proper divisors (1).

139293168389 is an equidigital number, since it uses as much as digits as its factorization.

139293168389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15116544, while the sum is 62.

The spelling of 139293168389 in words is "one hundred thirty-nine billion, two hundred ninety-three million, one hundred sixty-eight thousand, three hundred eighty-nine".