33959979 has 12 divisors (see below), whose sum is σ = 50870456. Its totient is φ = 22639824.

The previous prime is 33959977. The next prime is 33959993. The reversal of 33959979 is 97995933.

It is not a de Polignac number, because 33959979 - 2¹ = 33959977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (33959977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69634 + ... + 70119.

Almost surely, 2^33959979 is an apocalyptic number.

33959979 is a deficient number, since it is larger than the sum of its proper divisors (16910477).

33959979 is an equidigital number, since it uses as much as digits as its factorization.

33959979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139768 (or 139756 counting only the distinct ones).

The product of its digits is 2066715, while the sum is 54.

The square root of 33959979 is about 5827.5191119378. The cubic root of 33959979 is about 323.8340199238.

The spelling of 33959979 in words is "thirty-three million, nine hundred fifty-nine thousand, nine hundred seventy-nine".