33989317 has 2 divisors, whose sum is σ = 33989318. Its totient is φ = 33989316.

The previous prime is 33989297. The next prime is 33989321. The reversal of 33989317 is 71398933.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29604481 + 4384836 = 5441^2 + 2094^2 .

It is an emirp because it is prime and its reverse (71398933) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33989317 - 2¹¹ = 33987269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33983317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16994658 + 16994659.

It is an arithmetic number, because the mean of its divisors is an integer number (16994659).

Almost surely, 2^33989317 is an apocalyptic number.

It is an amenable number.

33989317 is a deficient number, since it is larger than the sum of its proper divisors (1).

33989317 is an equidigital number, since it uses as much as digits as its factorization.

33989317 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 33989317 is about 5830.0357631836. The cubic root of 33989317 is about 323.9272464040.

The spelling of 33989317 in words is "thirty-three million, nine hundred eighty-nine thousand, three hundred seventeen".