33908989 has 2 divisors, whose sum is σ = 33908990. Its totient is φ = 33908988.

The previous prime is 33908971. The next prime is 33909023. The reversal of 33908989 is 98980933.

33908989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24502500 + 9406489 = 4950^2 + 3067^2 .

It is an emirp because it is prime and its reverse (98980933) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33908989 - 2⁹ = 33908477 is a prime.

It is a super-2 number, since 2×33908989² = 2299639070004242, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33908089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16954494 + 16954495.

It is an arithmetic number, because the mean of its divisors is an integer number (16954495).

Almost surely, 2^33908989 is an apocalyptic number.

It is an amenable number.

33908989 is a deficient number, since it is larger than the sum of its proper divisors (1).

33908989 is an equidigital number, since it uses as much as digits as its factorization.

33908989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 33908989 is about 5823.1425364660. The cubic root of 33908989 is about 323.6718626992.

The spelling of 33908989 in words is "thirty-three million, nine hundred eight thousand, nine hundred eighty-nine".