85872841 has 4 divisors (see below), whose sum is σ = 86317972. Its totient is φ = 85427712.

The previous prime is 85872827. The next prime is 85872859. The reversal of 85872841 is 14827858.

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 6734025 + 79138816 = 2595^2 + 8896^2 .

It is a cyclic number.

It is not a de Polignac number, because 85872841 - 2¹¹ = 85870793 is a prime.

It is a super-2 number, since 2×85872841² = 14748289642822562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85872541) 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, 222276 + ... + 222661.

It is an arithmetic number, because the mean of its divisors is an integer number (21579493).

Almost surely, 2^85872841 is an apocalyptic number.

It is an amenable number.

85872841 is a deficient number, since it is larger than the sum of its proper divisors (445131).

85872841 is a wasteful number, since it uses less digits than its factorization.

85872841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445130.

The product of its digits is 143360, while the sum is 43.

The square root of 85872841 is about 9266.7600055251. The cubic root of 85872841 is about 441.1828383684.

The spelling of 85872841 in words is "eighty-five million, eight hundred seventy-two thousand, eight hundred forty-one".