85824939 has 8 divisors (see below), whose sum is σ = 114695680. Its totient is φ = 57085416.

The previous prime is 85824917. The next prime is 85824943. The reversal of 85824939 is 93942858.

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

It is not a de Polignac number, because 85824939 - 2⁷ = 85824811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85824979) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31267 + ... + 33900.

It is an arithmetic number, because the mean of its divisors is an integer number (14336960).

Almost surely, 2^85824939 is an apocalyptic number.

85824939 is a deficient number, since it is larger than the sum of its proper divisors (28870741).

85824939 is a wasteful number, since it uses less digits than its factorization.

85824939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65609.

The product of its digits is 622080, while the sum is 48.

The square root of 85824939 is about 9264.1750307299. The cubic root of 85824939 is about 441.1007888678.

The spelling of 85824939 in words is "eighty-five million, eight hundred twenty-four thousand, nine hundred thirty-nine".