139097719 has 2 divisors, whose sum is σ = 139097720. Its totient is φ = 139097718.

The previous prime is 139097711. The next prime is 139097737. The reversal of 139097719 is 917790931.

It is a weak prime.

It is an emirp because it is prime and its reverse (917790931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 139097719 - 2³ = 139097711 is a prime.

It is a super-2 number, since 2×139097719² = 38696350862005922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139097711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69548859 + 69548860.

It is an arithmetic number, because the mean of its divisors is an integer number (69548860).

Almost surely, 2^139097719 is an apocalyptic number.

139097719 is a deficient number, since it is larger than the sum of its proper divisors (1).

139097719 is an equidigital number, since it uses as much as digits as its factorization.

139097719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 107163, while the sum is 46.

The square root of 139097719 is about 11793.9696031489. The cubic root of 139097719 is about 518.1315078318.

The spelling of 139097719 in words is "one hundred thirty-nine million, ninety-seven thousand, seven hundred nineteen".