132439987 has 4 divisors (see below), whose sum is σ = 133751376. Its totient is φ = 131128600.

The previous prime is 132439969. The next prime is 132440023. The reversal of 132439987 is 789934231.

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

It is a cyclic number.

It is not a de Polignac number, because 132439987 - 2⁷ = 132439859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (132439907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 655543 + ... + 655744.

It is an arithmetic number, because the mean of its divisors is an integer number (33437844).

Almost surely, 2^132439987 is an apocalyptic number.

132439987 is a deficient number, since it is larger than the sum of its proper divisors (1311389).

132439987 is a wasteful number, since it uses less digits than its factorization.

132439987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311388.

The product of its digits is 326592, while the sum is 46.

The square root of 132439987 is about 11508.2573398408. The cubic root of 132439987 is about 509.7294310037.

The spelling of 132439987 in words is "one hundred thirty-two million, four hundred thirty-nine thousand, nine hundred eighty-seven".