87003909 has 64 divisors (see below), whose sum is σ = 144460800. Its totient is φ = 51508224.

The previous prime is 87003901. The next prime is 87003911. The reversal of 87003909 is 90930078.

It is not a de Polignac number, because 87003909 - 2³ = 87003901 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87003901) 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 63 ways as a sum of consecutive naturals, for example, 798147 + ... + 798255.

It is an arithmetic number, because the mean of its divisors is an integer number (2257200).

Almost surely, 2^87003909 is an apocalyptic number.

It is an amenable number.

87003909 is a deficient number, since it is larger than the sum of its proper divisors (57456891).

87003909 is a wasteful number, since it uses less digits than its factorization.

87003909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 87003909 is about 9327.5885951300. The cubic root of 87003909 is about 443.1113984551. Note that the first 3 decimals are identical.

The spelling of 87003909 in words is "eighty-seven million, three thousand, nine hundred nine".