338278139 has 2 divisors, whose sum is σ = 338278140. Its totient is φ = 338278138.

The previous prime is 338278133. The next prime is 338278153. The reversal of 338278139 is 931872833.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 338278139 - 2²⁸ = 69842683 is a prime.

It is a super-2 number, since 2×338278139² = 228864198650606642, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 338278139.

It is not a weakly prime, because it can be changed into another prime (338278133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169139069 + 169139070.

It is an arithmetic number, because the mean of its divisors is an integer number (169139070).

Almost surely, 2^338278139 is an apocalyptic number.

338278139 is a deficient number, since it is larger than the sum of its proper divisors (1).

338278139 is an equidigital number, since it uses as much as digits as its factorization.

338278139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 338278139 is about 18392.3391388915. The cubic root of 338278139 is about 696.7729960134.

The spelling of 338278139 in words is "three hundred thirty-eight million, two hundred seventy-eight thousand, one hundred thirty-nine".