133989594 has 16 divisors (see below), whose sum is σ = 269461920. Its totient is φ = 44416080.

The previous prime is 133989593. The next prime is 133989619. The reversal of 133989594 is 495989331.

It is a happy number.

It is a super-2 number, since 2×133989594² = 35906422600569672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (133989593) 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, 60604 + ... + 62775.

It is an arithmetic number, because the mean of its divisors is an integer number (16841370).

Almost surely, 2^133989594 is an apocalyptic number.

133989594 is an abundant number, since it is smaller than the sum of its proper divisors (135472326).

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

133989594 is a wasteful number, since it uses less digits than its factorization.

133989594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123565.

The product of its digits is 1049760, while the sum is 51.

The square root of 133989594 is about 11575.3874233220. The cubic root of 133989594 is about 511.7097481058.

The spelling of 133989594 in words is "one hundred thirty-three million, nine hundred eighty-nine thousand, five hundred ninety-four".