87000009 has 8 divisors (see below), whose sum is σ = 116768832. Its totient is φ = 57615600.

The previous prime is 86999989. The next prime is 87000037. The reversal of 87000009 is 90000078.

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

It is not a de Polignac number, because 87000009 - 2⁸ = 86999753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87000079) 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, 95574 + ... + 96479.

It is an arithmetic number, because the mean of its divisors is an integer number (14596104).

Almost surely, 2^87000009 is an apocalyptic number.

It is an amenable number.

87000009 is a deficient number, since it is larger than the sum of its proper divisors (29768823).

87000009 is a wasteful number, since it uses less digits than its factorization.

87000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192207.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 87000009 is about 9327.3795355394. The cubic root of 87000009 is about 443.1047774488.

The spelling of 87000009 in words is "eighty-seven million, nine", and thus it is an aban number and an uban number.