139316999 has 2 divisors, whose sum is σ = 139317000. Its totient is φ = 139316998.

The previous prime is 139316993. The next prime is 139317001. The reversal of 139316999 is 999613931.

139316999 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139316999 - 2²⁴ = 122539783 is a prime.

Together with 139317001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139316993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69658499 + 69658500.

It is an arithmetic number, because the mean of its divisors is an integer number (69658500).

Almost surely, 2^139316999 is an apocalyptic number.

139316999 is a deficient number, since it is larger than the sum of its proper divisors (1).

139316999 is an equidigital number, since it uses as much as digits as its factorization.

139316999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 354294, while the sum is 50.

The square root of 139316999 is about 11803.2622185564. The cubic root of 139316999 is about 518.4036336126.

The spelling of 139316999 in words is "one hundred thirty-nine million, three hundred sixteen thousand, nine hundred ninety-nine".