169228089 has 32 divisors (see below), whose sum is σ = 265263360. Its totient is φ = 106406784.

The previous prime is 169228063. The next prime is 169228093. The reversal of 169228089 is 980822961.

169228089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 169228089 - 2²¹ = 167130937 is a prime.

It is a super-2 number, since 2×169228089² = 57276292213183842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169228789) 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, 43467 + ... + 47199.

It is an arithmetic number, because the mean of its divisors is an integer number (8289480).

Almost surely, 2^169228089 is an apocalyptic number.

It is an amenable number.

169228089 is a deficient number, since it is larger than the sum of its proper divisors (96035271).

169228089 is a wasteful number, since it uses less digits than its factorization.

169228089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3838 (or 3832 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 169228089 is about 13008.7696958629. The cubic root of 169228089 is about 553.1260979007.

The spelling of 169228089 in words is "one hundred sixty-nine million, two hundred twenty-eight thousand, eighty-nine".