33242779 has 2 divisors, whose sum is σ = 33242780. Its totient is φ = 33242778.

The previous prime is 33242777. The next prime is 33242821. The reversal of 33242779 is 97724233.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 33242779 - 2¹ = 33242777 is a prime.

It is a super-2 number, since 2×33242779² = 2210164711285682, which contains 22 as substring.

Together with 33242777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (33242777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16621389 + 16621390.

It is an arithmetic number, because the mean of its divisors is an integer number (16621390).

Almost surely, 2^33242779 is an apocalyptic number.

33242779 is a deficient number, since it is larger than the sum of its proper divisors (1).

33242779 is an equidigital number, since it uses as much as digits as its factorization.

33242779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 37.

The square root of 33242779 is about 5765.6551232275. The cubic root of 33242779 is about 321.5380997411.

The spelling of 33242779 in words is "thirty-three million, two hundred forty-two thousand, seven hundred seventy-nine".