33990117 has 16 divisors (see below), whose sum is σ = 53581440. Its totient is φ = 18752832.

The previous prime is 33990109. The next prime is 33990137. The reversal of 33990117 is 71109933.

It is not a de Polignac number, because 33990117 - 2³ = 33990109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33990137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27298 + ... + 28515.

It is an arithmetic number, because the mean of its divisors is an integer number (3348840).

Almost surely, 2^33990117 is an apocalyptic number.

It is an amenable number.

33990117 is a deficient number, since it is larger than the sum of its proper divisors (19591323).

33990117 is a wasteful number, since it uses less digits than its factorization.

33990117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55852.

The product of its (nonzero) digits is 5103, while the sum is 33.

The square root of 33990117 is about 5830.1043729937. The cubic root of 33990117 is about 323.9297877884.

The spelling of 33990117 in words is "thirty-three million, nine hundred ninety thousand, one hundred seventeen".