33989849 has 2 divisors, whose sum is σ = 33989850. Its totient is φ = 33989848.

The previous prime is 33989843. The next prime is 33989873. The reversal of 33989849 is 94898933.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22733824 + 11256025 = 4768^2 + 3355^2 .

It is a cyclic number.

It is not a de Polignac number, because 33989849 - 2²⁰ = 32941273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33989849.

It is not a weakly prime, because it can be changed into another prime (33989843) 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, 16994924 + 16994925.

It is an arithmetic number, because the mean of its divisors is an integer number (16994925).

Almost surely, 2^33989849 is an apocalyptic number.

It is an amenable number.

33989849 is a deficient number, since it is larger than the sum of its proper divisors (1).

33989849 is an equidigital number, since it uses as much as digits as its factorization.

33989849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 53.

The square root of 33989849 is about 5830.0813887972. The cubic root of 33989849 is about 323.9289364291.

The spelling of 33989849 in words is "thirty-three million, nine hundred eighty-nine thousand, eight hundred forty-nine".