73939 has 2 divisors, whose sum is σ = 73940. Its totient is φ = 73938.

The previous prime is 73907. The next prime is 73943. The reversal of 73939 is 93937.

It is a strong prime.

73939 is a truncatable prime.

It is an emirp because it is prime and its reverse (93937) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73939 - 2⁵ = 73907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73939.

It is not a weakly prime, because it can be changed into another prime (73999) by changing a digit.

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

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36969 + 36970.

It is an arithmetic number, because the mean of its divisors is an integer number (36970).

2⁷³⁹³⁹ is an apocalyptic number.

73939 is a deficient number, since it is larger than the sum of its proper divisors (1).

73939 is an equidigital number, since it uses as much as digits as its factorization.

73939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5103, while the sum is 31.

The square root of 73939 is about 271.9172668295. The cubic root of 73939 is about 41.9718253973.

The spelling of 73939 in words is "seventy-three thousand, nine hundred thirty-nine".