339989729 has 2 divisors, whose sum is σ = 339989730. Its totient is φ = 339989728.

The previous prime is 339989719. The next prime is 339989737. The reversal of 339989729 is 927989933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251159104 + 88830625 = 15848^2 + 9425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-339989729 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (339989719) 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, 169994864 + 169994865.

It is an arithmetic number, because the mean of its divisors is an integer number (169994865).

Almost surely, 2^339989729 is an apocalyptic number.

It is an amenable number.

339989729 is a deficient number, since it is larger than the sum of its proper divisors (1).

339989729 is an equidigital number, since it uses as much as digits as its factorization.

339989729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6613488, while the sum is 59.

The square root of 339989729 is about 18438.8104008908. The cubic root of 339989729 is about 697.9461765051.

The spelling of 339989729 in words is "three hundred thirty-nine million, nine hundred eighty-nine thousand, seven hundred twenty-nine".