33243979393 has 8 divisors (see below), whose sum is σ = 34392594600. Its totient is φ = 32095515648.

The previous prime is 33243979367. The next prime is 33243979397. The reversal of 33243979393 is 39397934233.

It can be written as a sum of positive squares in 4 ways, for example, as 14733832689 + 18510146704 = 121383^2 + 136052^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-33243979393 is a prime.

It is a super-2 number, since 2×33243979393² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33243979397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 579555 + ... + 634327.

It is an arithmetic number, because the mean of its divisors is an integer number (4299074325).

Almost surely, 2^33243979393 is an apocalyptic number.

It is an amenable number.

33243979393 is a deficient number, since it is larger than the sum of its proper divisors (1148615207).

33243979393 is a wasteful number, since it uses less digits than its factorization.

33243979393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75731.

The product of its digits is 9920232, while the sum is 55.

The spelling of 33243979393 in words is "thirty-three billion, two hundred forty-three million, nine hundred seventy-nine thousand, three hundred ninety-three".