33109147 has 4 divisors (see below), whose sum is σ = 34177216. Its totient is φ = 32041080.

The previous prime is 33109127. The next prime is 33109163. The reversal of 33109147 is 74190133.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74190133 = 89 ⋅833597.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33109147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33109127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 533988 + ... + 534049.

It is an arithmetic number, because the mean of its divisors is an integer number (8544304).

Almost surely, 2^33109147 is an apocalyptic number.

33109147 is a deficient number, since it is larger than the sum of its proper divisors (1068069).

33109147 is a wasteful number, since it uses less digits than its factorization.

33109147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1068068.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 33109147 is about 5754.0548311604. The cubic root of 33109147 is about 321.1066728801.

The spelling of 33109147 in words is "thirty-three million, one hundred nine thousand, one hundred forty-seven".