33039997 has 2 divisors, whose sum is σ = 33039998. Its totient is φ = 33039996.

The previous prime is 33039991. The next prime is 33040009. The reversal of 33039997 is 79993033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27154521 + 5885476 = 5211^2 + 2426^2 .

It is an emirp because it is prime and its reverse (79993033) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 33039997 - 2⁷ = 33039869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (33039991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16519998 + 16519999.

It is an arithmetic number, because the mean of its divisors is an integer number (16519999).

Almost surely, 2^33039997 is an apocalyptic number.

It is an amenable number.

33039997 is a deficient number, since it is larger than the sum of its proper divisors (1).

33039997 is an equidigital number, since it uses as much as digits as its factorization.

33039997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 137781, while the sum is 43.

The square root of 33039997 is about 5748.0428843216. The cubic root of 33039997 is about 320.8829683070.

The spelling of 33039997 in words is "thirty-three million, thirty-nine thousand, nine hundred ninety-seven".