139157719 has 2 divisors, whose sum is σ = 139157720. Its totient is φ = 139157718.

The previous prime is 139157677. The next prime is 139157749. The reversal of 139157719 is 917751931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139157719 - 2¹¹ = 139155671 is a prime.

It is a super-2 number, since 2×139157719² = 38729741514565922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139157749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69578859 + 69578860.

It is an arithmetic number, because the mean of its divisors is an integer number (69578860).

Almost surely, 2^139157719 is an apocalyptic number.

139157719 is a deficient number, since it is larger than the sum of its proper divisors (1).

139157719 is an equidigital number, since it uses as much as digits as its factorization.

139157719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 59535, while the sum is 43.

The square root of 139157719 is about 11796.5130017306. The cubic root of 139157719 is about 518.2059960449.

It can be divided in two parts, 139157 and 719, that added together give a square (139876 = 374²).

The spelling of 139157719 in words is "one hundred thirty-nine million, one hundred fifty-seven thousand, seven hundred nineteen".