338879939 has 2 divisors, whose sum is σ = 338879940. Its totient is φ = 338879938.

The previous prime is 338879911. The next prime is 338879963. The reversal of 338879939 is 939978833.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 338879939 - 2¹² = 338875843 is a prime.

It is a super-2 number, since 2×338879939² = 229679226113287442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (338879969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169439969 + 169439970.

It is an arithmetic number, because the mean of its divisors is an integer number (169439970).

Almost surely, 2^338879939 is an apocalyptic number.

338879939 is a deficient number, since it is larger than the sum of its proper divisors (1).

338879939 is an equidigital number, since it uses as much as digits as its factorization.

338879939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 59.

The square root of 338879939 is about 18408.6919415802. The cubic root of 338879939 is about 697.1859398105.

The spelling of 338879939 in words is "three hundred thirty-eight million, eight hundred seventy-nine thousand, nine hundred thirty-nine".