169409223 has 12 divisors (see below), whose sum is σ = 244815168. Its totient is φ = 112887360.

The previous prime is 169409221. The next prime is 169409231. The reversal of 169409223 is 322904961.

It is not a de Polignac number, because 169409223 - 2¹ = 169409221 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169409221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34863 + ... + 39423.

It is an arithmetic number, because the mean of its divisors is an integer number (20401264).

Almost surely, 2^169409223 is an apocalyptic number.

169409223 is a deficient number, since it is larger than the sum of its proper divisors (75405945).

169409223 is a wasteful number, since it uses less digits than its factorization.

169409223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8694 (or 8691 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 169409223 is about 13015.7298297099. The cubic root of 169409223 is about 553.3233744841.

The spelling of 169409223 in words is "one hundred sixty-nine million, four hundred nine thousand, two hundred twenty-three".