85818939 has 8 divisors (see below), whose sum is σ = 114930240. Its totient is φ = 56960136.

The previous prime is 85818937. The next prime is 85818959. The reversal of 85818939 is 93981858.

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

It is not a de Polignac number, because 85818939 - 2¹ = 85818937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85818891 and 85818900.

It is not an unprimeable number, because it can be changed into a prime (85818937) 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 7 ways as a sum of consecutive naturals, for example, 62329 + ... + 63690.

It is an arithmetic number, because the mean of its divisors is an integer number (14366280).

Almost surely, 2^85818939 is an apocalyptic number.

85818939 is a deficient number, since it is larger than the sum of its proper divisors (29111301).

85818939 is a wasteful number, since it uses less digits than its factorization.

85818939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126249.

The product of its digits is 622080, while the sum is 51.

The square root of 85818939 is about 9263.8511969915. The cubic root of 85818939 is about 441.0905095464.

The spelling of 85818939 in words is "eighty-five million, eight hundred eighteen thousand, nine hundred thirty-nine".