133609089 has 8 divisors (see below), whose sum is σ = 178204320. Its totient is φ = 89043296.

The previous prime is 133609087. The next prime is 133609123. The reversal of 133609089 is 980906331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133609089 - 2¹ = 133609087 is a prime.

It is a super-3 number, since 3×133609089³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (133609087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7549 + ... + 18005.

It is an arithmetic number, because the mean of its divisors is an integer number (22275540).

Almost surely, 2^133609089 is an apocalyptic number.

It is an amenable number.

133609089 is a deficient number, since it is larger than the sum of its proper divisors (44595231).

133609089 is a wasteful number, since it uses less digits than its factorization.

133609089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14719.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 133609089 is about 11558.9397870220. The cubic root of 133609089 is about 511.2249026921.

The spelling of 133609089 in words is "one hundred thirty-three million, six hundred nine thousand, eighty-nine".