73989317 has 2 divisors, whose sum is σ = 73989318. Its totient is φ = 73989316.

The previous prime is 73989301. The next prime is 73989337. The reversal of 73989317 is 71398937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40972801 + 33016516 = 6401^2 + 5746^2 .

It is a cyclic number.

It is not a de Polignac number, because 73989317 - 2⁴ = 73989301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73989337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36994658 + 36994659.

It is an arithmetic number, because the mean of its divisors is an integer number (36994659).

Almost surely, 2^73989317 is an apocalyptic number.

It is an amenable number.

73989317 is a deficient number, since it is larger than the sum of its proper divisors (1).

73989317 is an equidigital number, since it uses as much as digits as its factorization.

73989317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 285768, while the sum is 47.

The square root of 73989317 is about 8601.7043078683. The cubic root of 73989317 is about 419.8134413327.

The spelling of 73989317 in words is "seventy-three million, nine hundred eighty-nine thousand, three hundred seventeen".