13144669 has 4 divisors (see below), whose sum is σ = 13367520. Its totient is φ = 12921820.

The previous prime is 13144639. The next prime is 13144673. The reversal of 13144669 is 96644131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13144669 - 2¹¹ = 13142621 is a prime.

It is a super-2 number, since 2×13144669² = 345564646239122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111337 + ... + 111454.

It is an arithmetic number, because the mean of its divisors is an integer number (3341880).

Almost surely, 2^13144669 is an apocalyptic number.

It is an amenable number.

13144669 is a deficient number, since it is larger than the sum of its proper divisors (222851).

13144669 is an equidigital number, since it uses as much as digits as its factorization.

13144669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222850.

The product of its digits is 15552, while the sum is 34.

The square root of 13144669 is about 3625.5577501951. The cubic root of 13144669 is about 236.0024717255.

The spelling of 13144669 in words is "thirteen million, one hundred forty-four thousand, six hundred sixty-nine".