139384313 has 2 divisors, whose sum is σ = 139384314. Its totient is φ = 139384312.

The previous prime is 139384253. The next prime is 139384319. The reversal of 139384313 is 313483931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107889769 + 31494544 = 10387^2 + 5612^2 .

It is a cyclic number.

It is not a de Polignac number, because 139384313 - 2⁶ = 139384249 is a prime.

It is not a weakly prime, because it can be changed into another prime (139384319) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69692156 + 69692157.

It is an arithmetic number, because the mean of its divisors is an integer number (69692157).

Almost surely, 2^139384313 is an apocalyptic number.

It is an amenable number.

139384313 is a deficient number, since it is larger than the sum of its proper divisors (1).

139384313 is an equidigital number, since it uses as much as digits as its factorization.

139384313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 35.

The square root of 139384313 is about 11806.1133740109. The cubic root of 139384313 is about 518.4871127854.

The spelling of 139384313 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, three hundred thirteen".