85412169 has 12 divisors (see below), whose sum is σ = 126708036. Its totient is φ = 55402272.

The previous prime is 85412149. The next prime is 85412183. The reversal of 85412169 is 96121458.

85412169 is a `hidden beast` number, since 85 + 412 + 169 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 78057225 + 7354944 = 8835^2 + 2712^2 .

It is not a de Polignac number, because 85412169 - 2¹¹ = 85410121 is a prime.

It is a super-2 number, since 2×85412169² = 14590477226569122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (85412149) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 127914 + ... + 128579.

It is an arithmetic number, because the mean of its divisors is an integer number (10559003).

Almost surely, 2^85412169 is an apocalyptic number.

It is an amenable number.

85412169 is a deficient number, since it is larger than the sum of its proper divisors (41295867).

85412169 is a wasteful number, since it uses less digits than its factorization.

85412169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256536 (or 256533 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 85412169 is about 9241.8704275704. The cubic root of 85412169 is about 440.3925027246.

The spelling of 85412169 in words is "eighty-five million, four hundred twelve thousand, one hundred sixty-nine".