33960989 has 4 divisors (see below), whose sum is σ = 34028220. Its totient is φ = 33893760.

The previous prime is 33960973. The next prime is 33960991. The reversal of 33960989 is 98906933.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98906933 = 163 ⋅606791.

It can be written as a sum of positive squares in 2 ways, for example, as 21780889 + 12180100 = 4667^2 + 3490^2 .

It is a cyclic number.

It is not a de Polignac number, because 33960989 - 2⁴ = 33960973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33960919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32852 + ... + 33869.

It is an arithmetic number, because the mean of its divisors is an integer number (8507055).

Almost surely, 2^33960989 is an apocalyptic number.

It is an amenable number.

33960989 is a deficient number, since it is larger than the sum of its proper divisors (67231).

33960989 is an equidigital number, since it uses as much as digits as its factorization.

33960989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67230.

The product of its (nonzero) digits is 314928, while the sum is 47.

The square root of 33960989 is about 5827.6057690959. The cubic root of 33960989 is about 323.8372302627.

The spelling of 33960989 in words is "thirty-three million, nine hundred sixty thousand, nine hundred eighty-nine".