139515983389 has 2 divisors, whose sum is σ = 139515983390. Its totient is φ = 139515983388.

The previous prime is 139515983377. The next prime is 139515983393. The reversal of 139515983389 is 983389515931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109537831225 + 29978152164 = 330965^2 + 173142^2 .

It is a cyclic number.

It is not a de Polignac number, because 139515983389 - 2²³ = 139507594781 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139515983389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139515983339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69757991694 + 69757991695.

It is an arithmetic number, because the mean of its divisors is an integer number (69757991695).

Almost surely, 2^139515983389 is an apocalyptic number.

It is an amenable number.

139515983389 is a deficient number, since it is larger than the sum of its proper divisors (1).

139515983389 is an equidigital number, since it uses as much as digits as its factorization.

139515983389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31492800, while the sum is 64.

The spelling of 139515983389 in words is "one hundred thirty-nine billion, five hundred fifteen million, nine hundred eighty-three thousand, three hundred eighty-nine".