33149399 has 2 divisors, whose sum is σ = 33149400. Its totient is φ = 33149398.

The previous prime is 33149393. The next prime is 33149401. The reversal of 33149399 is 99394133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 33149399 - 2⁴ = 33149383 is a prime.

It is a super-2 number, since 2×33149399² = 2197765308122402, which contains 22 as substring.

Together with 33149401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33149393) 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, 16574699 + 16574700.

It is an arithmetic number, because the mean of its divisors is an integer number (16574700).

Almost surely, 2^33149399 is an apocalyptic number.

33149399 is a deficient number, since it is larger than the sum of its proper divisors (1).

33149399 is an equidigital number, since it uses as much as digits as its factorization.

33149399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 41.

The square root of 33149399 is about 5757.5514761051. The cubic root of 33149399 is about 321.2367472214.

The spelling of 33149399 in words is "thirty-three million, one hundred forty-nine thousand, three hundred ninety-nine".