85916169 has 6 divisors (see below), whose sum is σ = 124101146. Its totient is φ = 57277440.

The previous prime is 85916137. The next prime is 85916191. The reversal of 85916169 is 96161958.

It can be written as a sum of positive squares in only one way, i.e., 75898944 + 10017225 = 8712^2 + 3165^2 .

It is not a de Polignac number, because 85916169 - 2⁵ = 85916137 is a prime.

It is a super-2 number, since 2×85916169² = 14763176191273122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85916069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4773112 + ... + 4773129.

Almost surely, 2^85916169 is an apocalyptic number.

It is an amenable number.

85916169 is a deficient number, since it is larger than the sum of its proper divisors (38184977).

85916169 is a wasteful number, since it uses less digits than its factorization.

85916169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9546247 (or 9546244 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 85916169 is about 9269.0975288860. The cubic root of 85916169 is about 441.2570269621.

The spelling of 85916169 in words is "eighty-five million, nine hundred sixteen thousand, one hundred sixty-nine".