87607939 has 4 divisors (see below), whose sum is σ = 89744760. Its totient is φ = 85471120.

The previous prime is 87607937. The next prime is 87607963. The reversal of 87607939 is 93970678.

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 87607939 - 2¹ = 87607937 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87607892 and 87607901.

It is not an unprimeable number, because it can be changed into a prime (87607931) 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, 1068349 + ... + 1068430.

It is an arithmetic number, because the mean of its divisors is an integer number (22436190).

Almost surely, 2^87607939 is an apocalyptic number.

87607939 is a deficient number, since it is larger than the sum of its proper divisors (2136821).

87607939 is a wasteful number, since it uses less digits than its factorization.

87607939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136820.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 87607939 is about 9359.9112709470. The cubic root of 87607939 is about 444.1344772298.

The spelling of 87607939 in words is "eighty-seven million, six hundred seven thousand, nine hundred thirty-nine".