139384319 has 2 divisors, whose sum is σ = 139384320. Its totient is φ = 139384318.

The previous prime is 139384313. The next prime is 139384327. The reversal of 139384319 is 913483931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139384319 - 2¹⁶ = 139318783 is a prime.

It is a super-2 number, since 2×139384319² = 38855976766187522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139384313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69692159 + 69692160.

It is an arithmetic number, because the mean of its divisors is an integer number (69692160).

Almost surely, 2^139384319 is an apocalyptic number.

139384319 is a deficient number, since it is larger than the sum of its proper divisors (1).

139384319 is an equidigital number, since it uses as much as digits as its factorization.

139384319 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 41.

The square root of 139384319 is about 11806.1136281166. The cubic root of 139384319 is about 518.4871202250.

The spelling of 139384319 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, three hundred nineteen".