13171969 has 4 divisors (see below), whose sum is σ = 13188096. Its totient is φ = 13155844.

The previous prime is 13171943. The next prime is 13171973. The reversal of 13171969 is 96917131.

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, and also an emirpimes, since its reverse is a distinct semiprime: 96917131 = 331 ⋅292801.

It is a cyclic number.

It is not a de Polignac number, because 13171969 - 2⁵ = 13171937 is a prime.

It is a super-2 number, since 2×13171969² = 347001534673922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13171069) 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, 6769 + ... + 8494.

It is an arithmetic number, because the mean of its divisors is an integer number (3297024).

Almost surely, 2^13171969 is an apocalyptic number.

It is an amenable number.

13171969 is a deficient number, since it is larger than the sum of its proper divisors (16127).

13171969 is an equidigital number, since it uses as much as digits as its factorization.

13171969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16126.

The product of its digits is 10206, while the sum is 37.

The square root of 13171969 is about 3629.3207353443. The cubic root of 13171969 is about 236.1657422815.

The spelling of 13171969 in words is "thirteen million, one hundred seventy-one thousand, nine hundred sixty-nine".