339649 has 2 divisors, whose sum is σ = 339650. Its totient is φ = 339648.

The previous prime is 339637. The next prime is 339653. The reversal of 339649 is 946933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336400 + 3249 = 580^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 339649 - 2⁵ = 339617 is a prime.

It is a super-2 number, since 2×339649² = 230722886402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (339659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 169824 + 169825.

It is an arithmetic number, because the mean of its divisors is an integer number (169825).

2³³⁹⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

339649 is a deficient number, since it is larger than the sum of its proper divisors (1).

339649 is an equidigital number, since it uses as much as digits as its factorization.

339649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17496, while the sum is 34.

The square root of 339649 is about 582.7941317481. The cubic root of 339649 is about 69.7712943979.

The spelling of 339649 in words is "three hundred thirty-nine thousand, six hundred forty-nine".