139034879 has 2 divisors, whose sum is σ = 139034880. Its totient is φ = 139034878.

The previous prime is 139034869. The next prime is 139034881. The reversal of 139034879 is 978430931.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (978430931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139034879 is a prime.

Together with 139034881, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139034809) 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, 69517439 + 69517440.

It is an arithmetic number, because the mean of its divisors is an integer number (69517440).

Almost surely, 2^139034879 is an apocalyptic number.

139034879 is a deficient number, since it is larger than the sum of its proper divisors (1).

139034879 is an equidigital number, since it uses as much as digits as its factorization.

139034879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 139034879 is about 11791.3052288540. The cubic root of 139034879 is about 518.0534708745.

The spelling of 139034879 in words is "one hundred thirty-nine million, thirty-four thousand, eight hundred seventy-nine".