33890489 has 2 divisors, whose sum is σ = 33890490. Its totient is φ = 33890488.

The previous prime is 33890453. The next prime is 33890513. The reversal of 33890489 is 98409833.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29246464 + 4644025 = 5408^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 33890489 - 2²⁴ = 17113273 is a prime.

It is a super-2 number, since 2×33890489² = 2297130489318242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33890189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16945244 + 16945245.

It is an arithmetic number, because the mean of its divisors is an integer number (16945245).

Almost surely, 2^33890489 is an apocalyptic number.

It is an amenable number.

33890489 is a deficient number, since it is larger than the sum of its proper divisors (1).

33890489 is an equidigital number, since it uses as much as digits as its factorization.

33890489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 33890489 is about 5821.5538303790. The cubic root of 33890489 is about 323.6129892369.

The spelling of 33890489 in words is "thirty-three million, eight hundred ninety thousand, four hundred eighty-nine".