33397139 has 2 divisors, whose sum is σ = 33397140. Its totient is φ = 33397138.

The previous prime is 33397121. The next prime is 33397141. The reversal of 33397139 is 93179333.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33397139 - 2²⁴ = 16619923 is a prime.

It is a super-2 number, since 2×33397139² = 2230737786770642, which contains 22 as substring.

Together with 33397141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (33390139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16698569 + 16698570.

It is an arithmetic number, because the mean of its divisors is an integer number (16698570).

Almost surely, 2^33397139 is an apocalyptic number.

33397139 is a deficient number, since it is larger than the sum of its proper divisors (1).

33397139 is an equidigital number, since it uses as much as digits as its factorization.

33397139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 38.

The square root of 33397139 is about 5779.0257829499. The cubic root of 33397139 is about 322.0350096317.

The spelling of 33397139 in words is "thirty-three million, three hundred ninety-seven thousand, one hundred thirty-nine".