33968491 has 2 divisors, whose sum is σ = 33968492. Its totient is φ = 33968490.

The previous prime is 33968489. The next prime is 33968509. The reversal of 33968491 is 19486933.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33968491 - 2¹ = 33968489 is a prime.

Together with 33968489, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33968411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16984245 + 16984246.

It is an arithmetic number, because the mean of its divisors is an integer number (16984246).

Almost surely, 2^33968491 is an apocalyptic number.

33968491 is a deficient number, since it is larger than the sum of its proper divisors (1).

33968491 is an equidigital number, since it uses as much as digits as its factorization.

33968491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 33968491 is about 5828.2493941148. The cubic root of 33968491 is about 323.8610737775.

The spelling of 33968491 in words is "thirty-three million, nine hundred sixty-eight thousand, four hundred ninety-one".