87824939 has 8 divisors (see below), whose sum is σ = 90378288. Its totient is φ = 85281120.

The previous prime is 87824929. The next prime is 87824951. The reversal of 87824939 is 93942878.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 87824939 - 2¹⁶ = 87759403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87824909) 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 7 ways as a sum of consecutive naturals, for example, 19049 + ... + 23205.

It is an arithmetic number, because the mean of its divisors is an integer number (11297286).

Almost surely, 2^87824939 is an apocalyptic number.

87824939 is a deficient number, since it is larger than the sum of its proper divisors (2553349).

87824939 is a wasteful number, since it uses less digits than its factorization.

87824939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765.

The product of its digits is 870912, while the sum is 50.

The square root of 87824939 is about 9371.4960918735. The cubic root of 87824939 is about 444.5008736939.

The spelling of 87824939 in words is "eighty-seven million, eight hundred twenty-four thousand, nine hundred thirty-nine".