132686989 has 4 divisors (see below), whose sum is σ = 140492124. Its totient is φ = 124881856.

The previous prime is 132686987. The next prime is 132686999. The reversal of 132686989 is 989686231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 75986089 + 56700900 = 8717^2 + 7530^2 .

It is a cyclic number.

It is not a de Polignac number, because 132686989 - 2¹ = 132686987 is a prime.

It is a super-2 number, since 2×132686989² = 35211674099772242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132686987) 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, 3902542 + ... + 3902575.

It is an arithmetic number, because the mean of its divisors is an integer number (35123031).

Almost surely, 2^132686989 is an apocalyptic number.

It is an amenable number.

132686989 is a deficient number, since it is larger than the sum of its proper divisors (7805135).

132686989 is an equidigital number, since it uses as much as digits as its factorization.

132686989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7805134.

The product of its digits is 1119744, while the sum is 52.

The square root of 132686989 is about 11518.9838527537. The cubic root of 132686989 is about 510.0461178339.

The spelling of 132686989 in words is "one hundred thirty-two million, six hundred eighty-six thousand, nine hundred eighty-nine".