33989394 has 16 divisors (see below), whose sum is σ = 68035968. Its totient is φ = 11320272.

The previous prime is 33989381. The next prime is 33989419. The reversal of 33989394 is 49398933.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12484 + ... + 14960.

It is an arithmetic number, because the mean of its divisors is an integer number (4252248).

Almost surely, 2^33989394 is an apocalyptic number.

33989394 is an abundant number, since it is smaller than the sum of its proper divisors (34046574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33989394 is a wasteful number, since it uses less digits than its factorization.

33989394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4769.

The product of its digits is 629856, while the sum is 48.

The square root of 33989394 is about 5830.0423669130. The cubic root of 33989394 is about 323.9274910139.

The spelling of 33989394 in words is "thirty-three million, nine hundred eighty-nine thousand, three hundred ninety-four".