87502939 has 4 divisors (see below), whose sum is σ = 87528600. Its totient is φ = 87477280.

The previous prime is 87502937. The next prime is 87502949. The reversal of 87502939 is 93920578.

It is a happy number.

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 87502939 - 2¹ = 87502937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87502895 and 87502904.

It is not an unprimeable number, because it can be changed into a prime (87502937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6757 + ... + 14854.

It is an arithmetic number, because the mean of its divisors is an integer number (21882150).

Almost surely, 2^87502939 is an apocalyptic number.

87502939 is a deficient number, since it is larger than the sum of its proper divisors (25661).

87502939 is a wasteful number, since it uses less digits than its factorization.

87502939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25660.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 87502939 is about 9354.3005617737. The cubic root of 87502939 is about 443.9569713868.

The spelling of 87502939 in words is "eighty-seven million, five hundred two thousand, nine hundred thirty-nine".