169244969 has 4 divisors (see below), whose sum is σ = 169984260. Its totient is φ = 168505680.

The previous prime is 169244941. The next prime is 169245001. The reversal of 169244969 is 969442961.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 969442961 = 1069 ⋅906869.

It can be written as a sum of positive squares in 2 ways, for example, as 88604569 + 80640400 = 9413^2 + 8980^2 .

It is a cyclic number.

It is not a de Polignac number, because 169244969 - 2²⁰ = 168196393 is a prime.

It is a super-2 number, since 2×169244969² = 57287719063621922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169243969) 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 3 ways as a sum of consecutive naturals, for example, 369302 + ... + 369759.

It is an arithmetic number, because the mean of its divisors is an integer number (42496065).

Almost surely, 2^169244969 is an apocalyptic number.

It is an amenable number.

169244969 is a deficient number, since it is larger than the sum of its proper divisors (739291).

169244969 is an equidigital number, since it uses as much as digits as its factorization.

169244969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739290.

The product of its digits is 839808, while the sum is 50.

The square root of 169244969 is about 13009.4184727835. The cubic root of 169244969 is about 553.1444881852.

The spelling of 169244969 in words is "one hundred sixty-nine million, two hundred forty-four thousand, nine hundred sixty-nine".