33945669 has 8 divisors (see below), whose sum is σ = 50289920. Its totient is φ = 22630428.

The previous prime is 33945649. The next prime is 33945679. The reversal of 33945669 is 96654933.

It is a happy number.

It is not a de Polignac number, because 33945669 - 2⁹ = 33945157 is a prime.

It is a super-4 number, since 4×33945669⁴ (a number of 31 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33945629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 628597 + ... + 628650.

It is an arithmetic number, because the mean of its divisors is an integer number (6286240).

Almost surely, 2^33945669 is an apocalyptic number.

It is an amenable number.

33945669 is a deficient number, since it is larger than the sum of its proper divisors (16344251).

33945669 is a wasteful number, since it uses less digits than its factorization.

33945669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1257256 (or 1257250 counting only the distinct ones).

The product of its digits is 524880, while the sum is 45.

The square root of 33945669 is about 5826.2911873678. The cubic root of 33945669 is about 323.7885279849.

The spelling of 33945669 in words is "thirty-three million, nine hundred forty-five thousand, six hundred sixty-nine".