13169385 has 28 divisors (see below), whose sum is σ = 23700612. Its totient is φ = 7021728.

The previous prime is 13169383. The next prime is 13169417. The reversal of 13169385 is 58396131.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1411344 + 11758041 = 1188^2 + 3429^2 .

It is not a de Polignac number, because 13169385 - 2¹ = 13169383 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 not an unprimeable number, because it can be changed into a prime (13169383) 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 27 ways as a sum of consecutive naturals, for example, 1839 + ... + 5451.

Almost surely, 2^13169385 is an apocalyptic number.

13169385 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13169385 is a deficient number, since it is larger than the sum of its proper divisors (10531227).

13169385 is an frugal number, since it uses more digits than its factorization.

13169385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636 (or 3621 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 13169385 is about 3628.9647284040. The cubic root of 13169385 is about 236.1502980659.

It can be divided in two parts, 1316 and 9385, that added together give a palindrome (10701).

The spelling of 13169385 in words is "thirteen million, one hundred sixty-nine thousand, three hundred eighty-five".