85169469 has 32 divisors (see below), whose sum is σ = 142055424. Its totient is φ = 44095680.

The previous prime is 85169401. The next prime is 85169471. The reversal of 85169469 is 96496158.

It is not a de Polignac number, because 85169469 - 2⁸ = 85169213 is a prime.

It is a super-2 number, since 2×85169469² = 14507676899483922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85169489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 115827 + ... + 116559.

It is an arithmetic number, because the mean of its divisors is an integer number (4439232).

Almost surely, 2^85169469 is an apocalyptic number.

It is an amenable number.

85169469 is a deficient number, since it is larger than the sum of its proper divisors (56885955).

85169469 is a wasteful number, since it uses less digits than its factorization.

85169469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257.

The product of its digits is 466560, while the sum is 48.

The square root of 85169469 is about 9228.7306277732. The cubic root of 85169469 is about 439.9749796379.

The spelling of 85169469 in words is "eighty-five million, one hundred sixty-nine thousand, four hundred sixty-nine".