33394147 has 2 divisors, whose sum is σ = 33394148. Its totient is φ = 33394146.

The previous prime is 33394139. The next prime is 33394157. The reversal of 33394147 is 74149333.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33394147 - 2³ = 33394139 is a prime.

It is a super-2 number, since 2×33394147² = 2230338107715218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (33394157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16697073 + 16697074.

It is an arithmetic number, because the mean of its divisors is an integer number (16697074).

Almost surely, 2^33394147 is an apocalyptic number.

33394147 is a deficient number, since it is larger than the sum of its proper divisors (1).

33394147 is an equidigital number, since it uses as much as digits as its factorization.

33394147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216, while the sum is 34.

The square root of 33394147 is about 5778.7669099904. The cubic root of 33394147 is about 322.0253924653.

The spelling of 33394147 in words is "thirty-three million, three hundred ninety-four thousand, one hundred forty-seven".