913686139 has 2 divisors, whose sum is σ = 913686140. Its totient is φ = 913686138.

The previous prime is 913686101. The next prime is 913686211. The reversal of 913686139 is 931686319.

It is a weak prime.

It is an emirp because it is prime and its reverse (931686319) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 913686139 - 2⁹ = 913685627 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (913606139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 456843069 + 456843070.

It is an arithmetic number, because the mean of its divisors is an integer number (456843070).

Almost surely, 2^913686139 is an apocalyptic number.

913686139 is a deficient number, since it is larger than the sum of its proper divisors (1).

913686139 is an equidigital number, since it uses as much as digits as its factorization.

913686139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 46.

The square root of 913686139 is about 30227.2416703873. The cubic root of 913686139 is about 970.3587927668.

The spelling of 913686139 in words is "nine hundred thirteen million, six hundred eighty-six thousand, one hundred thirty-nine".