87132009 has 8 divisors (see below), whose sum is σ = 116825760. Its totient is φ = 57763136.

The previous prime is 87132007. The next prime is 87132013. The reversal of 87132009 is 90023178.

It is a happy number.

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 87132009 - 2¹ = 87132007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87132007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80592 + ... + 81665.

It is an arithmetic number, because the mean of its divisors is an integer number (14603220).

Almost surely, 2^87132009 is an apocalyptic number.

It is an amenable number.

87132009 is a deficient number, since it is larger than the sum of its proper divisors (29693751).

87132009 is a wasteful number, since it uses less digits than its factorization.

87132009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162439.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 87132009 is about 9334.4527959597. The cubic root of 87132009 is about 443.3287631516.

The spelling of 87132009 in words is "eighty-seven million, one hundred thirty-two thousand, nine".