87500939 has 4 divisors (see below), whose sum is σ = 88699656. Its totient is φ = 86302224.

The previous prime is 87500911. The next prime is 87500969. The reversal of 87500939 is 93900578.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87500939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87500896 and 87500905.

It is not an unprimeable number, because it can be changed into a prime (87500969) 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 3 ways as a sum of consecutive naturals, for example, 599249 + ... + 599394.

It is an arithmetic number, because the mean of its divisors is an integer number (22174914).

Almost surely, 2^87500939 is an apocalyptic number.

87500939 is a deficient number, since it is larger than the sum of its proper divisors (1198717).

87500939 is a wasteful number, since it uses less digits than its factorization.

87500939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198716.

The product of its (nonzero) digits is 68040, while the sum is 41.

The square root of 87500939 is about 9354.1936584614. The cubic root of 87500939 is about 443.9535889453.

The spelling of 87500939 in words is "eighty-seven million, five hundred thousand, nine hundred thirty-nine".