139426319 has 2 divisors, whose sum is σ = 139426320. Its totient is φ = 139426318.

The previous prime is 139426307. The next prime is 139426327. The reversal of 139426319 is 913624931.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 139426319 - 2¹² = 139422223 is a prime.

It is a super-2 number, since 2×139426319² = 38879396859779522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139426349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69713159 + 69713160.

It is an arithmetic number, because the mean of its divisors is an integer number (69713160).

Almost surely, 2^139426319 is an apocalyptic number.

139426319 is a deficient number, since it is larger than the sum of its proper divisors (1).

139426319 is an equidigital number, since it uses as much as digits as its factorization.

139426319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 38.

The square root of 139426319 is about 11807.8922335868. The cubic root of 139426319 is about 518.5391927305.

The spelling of 139426319 in words is "one hundred thirty-nine million, four hundred twenty-six thousand, three hundred nineteen".