89169189 has 16 divisors (see below), whose sum is σ = 120706560. Its totient is φ = 58544640.

The previous prime is 89169187. The next prime is 89169191. The reversal of 89169189 is 98196198.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (89169187) and next prime (89169191).

It is not a de Polignac number, because 89169189 - 2¹ = 89169187 is a prime.

It is a super-2 number, since 2×89169189² = 15902288533835442, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89169181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89484 + ... + 90474.

It is an arithmetic number, because the mean of its divisors is an integer number (7544160).

Almost surely, 2^89169189 is an apocalyptic number.

89169189 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

89169189 is a deficient number, since it is larger than the sum of its proper divisors (31537371).

89169189 is a wasteful number, since it uses less digits than its factorization.

89169189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1420.

The product of its digits is 279936, while the sum is 51.

The square root of 89169189 is about 9442.9438736021. The cubic root of 89169189 is about 446.7572464873.

It can be divided in two parts, 891691 and 89, that added together give a triangular number (891780 = T₁₃₃₅).

The spelling of 89169189 in words is "eighty-nine million, one hundred sixty-nine thousand, one hundred eighty-nine".