89856169 has 12 divisors (see below), whose sum is σ = 102799564. Its totient is φ = 78061824.

The previous prime is 89856161. The next prime is 89856209. The reversal of 89856169 is 96165898.

It can be written as a sum of positive squares in 6 ways, for example, as 2190400 + 87665769 = 1480^2 + 9363^2 .

It is not a de Polignac number, because 89856169 - 2³ = 89856161 is a prime.

It is a super-2 number, since 2×89856169² = 16148262214713122, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89856161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8202 + ... + 15715.

Almost surely, 2^89856169 is an apocalyptic number.

It is an amenable number.

89856169 is a deficient number, since it is larger than the sum of its proper divisors (12943395).

89856169 is a wasteful number, since it uses less digits than its factorization.

89856169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23964 (or 23947 counting only the distinct ones).

The product of its digits is 933120, while the sum is 52.

The square root of 89856169 is about 9479.2493901152. The cubic root of 89856169 is about 447.9016196202.

The spelling of 89856169 in words is "eighty-nine million, eight hundred fifty-six thousand, one hundred sixty-nine".