85844285 has 4 divisors (see below), whose sum is σ = 103013148. Its totient is φ = 68675424.

The previous prime is 85844273. The next prime is 85844287. The reversal of 85844285 is 58244858.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58323769 + 27520516 = 7637^2 + 5246^2 .

It is a cyclic number.

It is not a de Polignac number, because 85844285 - 2⁸ = 85844029 is a prime.

It is a super-2 number, since 2×85844285² = 14738482534322450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85844287) 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, 8584424 + ... + 8584433.

It is an arithmetic number, because the mean of its divisors is an integer number (25753287).

Almost surely, 2^85844285 is an apocalyptic number.

It is an amenable number.

85844285 is a deficient number, since it is larger than the sum of its proper divisors (17168863).

85844285 is a wasteful number, since it uses less digits than its factorization.

85844285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17168862.

The product of its digits is 409600, while the sum is 44.

The square root of 85844285 is about 9265.2191015647. The cubic root of 85844285 is about 441.1339295643.

The spelling of 85844285 in words is "eighty-five million, eight hundred forty-four thousand, two hundred eighty-five".