33633139 has 2 divisors, whose sum is σ = 33633140. Its totient is φ = 33633138.

The previous prime is 33633137. The next prime is 33633151. The reversal of 33633139 is 93133633.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33633139 - 2¹ = 33633137 is a prime.

It is a super-2 number, since 2×33633139² = 2262376077986642, which contains 22 as substring.

Together with 33633137, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 33633139.

It is not a weakly prime, because it can be changed into another prime (33633133) 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, 16816569 + 16816570.

It is an arithmetic number, because the mean of its divisors is an integer number (16816570).

Almost surely, 2^33633139 is an apocalyptic number.

33633139 is a deficient number, since it is larger than the sum of its proper divisors (1).

33633139 is an equidigital number, since it uses as much as digits as its factorization.

33633139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13122, while the sum is 31.

The square root of 33633139 is about 5799.4085043218. The cubic root of 33633139 is about 322.7917804819.

The spelling of 33633139 in words is "thirty-three million, six hundred thirty-three thousand, one hundred thirty-nine".