87385839 has 4 divisors (see below), whose sum is σ = 116514456. Its totient is φ = 58257224.

The previous prime is 87385829. The next prime is 87385849. The reversal of 87385839 is 93858378.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (87385829) and next prime (87385849).

It is a cyclic number.

It is not a de Polignac number, because 87385839 - 2⁸ = 87385583 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87385791 and 87385800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87385829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14564304 + ... + 14564309.

It is an arithmetic number, because the mean of its divisors is an integer number (29128614).

Almost surely, 2^87385839 is an apocalyptic number.

87385839 is a deficient number, since it is larger than the sum of its proper divisors (29128617).

87385839 is a wasteful number, since it uses less digits than its factorization.

87385839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29128616.

The product of its digits is 1451520, while the sum is 51.

The square root of 87385839 is about 9348.0393131394. The cubic root of 87385839 is about 443.7588425402.

The spelling of 87385839 in words is "eighty-seven million, three hundred eighty-five thousand, eight hundred thirty-nine".