67939 has 2 divisors, whose sum is σ = 67940. Its totient is φ = 67938.

The previous prime is 67933. The next prime is 67943. The reversal of 67939 is 93976.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67939 - 2³ = 67931 is a prime.

It is not a weakly prime, because it can be changed into another prime (67931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33969 + 33970.

It is an arithmetic number, because the mean of its divisors is an integer number (33970).

2⁶⁷⁹³⁹ is an apocalyptic number.

67939 is a deficient number, since it is larger than the sum of its proper divisors (1).

67939 is an equidigital number, since it uses as much as digits as its factorization.

67939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10206, while the sum is 34.

The square root of 67939 is about 260.6511078051. The cubic root of 67939 is about 40.8043424188.

The spelling of 67939 in words is "sixty-seven thousand, nine hundred thirty-nine".