33915139 has 2 divisors, whose sum is σ = 33915140. Its totient is φ = 33915138.

The previous prime is 33915137. The next prime is 33915163. The reversal of 33915139 is 93151933.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33915139 - 2¹ = 33915137 is a prime.

Together with 33915137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33915131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16957569 + 16957570.

It is an arithmetic number, because the mean of its divisors is an integer number (16957570).

Almost surely, 2^33915139 is an apocalyptic number.

33915139 is a deficient number, since it is larger than the sum of its proper divisors (1).

33915139 is an equidigital number, since it uses as much as digits as its factorization.

33915139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10935, while the sum is 34.

The square root of 33915139 is about 5823.6705779087. The cubic root of 33915139 is about 323.6914294049.

The spelling of 33915139 in words is "thirty-three million, nine hundred fifteen thousand, one hundred thirty-nine".