339649979 has 2 divisors, whose sum is σ = 339649980. Its totient is φ = 339649978.

The previous prime is 339649957. The next prime is 339650011. The reversal of 339649979 is 979946933.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-339649979 is a prime.

It is not a weakly prime, because it can be changed into another prime (339649879) 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, 169824989 + 169824990.

It is an arithmetic number, because the mean of its divisors is an integer number (169824990).

Almost surely, 2^339649979 is an apocalyptic number.

339649979 is a deficient number, since it is larger than the sum of its proper divisors (1).

339649979 is an equidigital number, since it uses as much as digits as its factorization.

339649979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9920232, while the sum is 59.

The square root of 339649979 is about 18429.5951936010. The cubic root of 339649979 is about 697.7136143384.

The spelling of 339649979 in words is "three hundred thirty-nine million, six hundred forty-nine thousand, nine hundred seventy-nine".