12961169 has 4 divisors (see below), whose sum is σ = 13958196. Its totient is φ = 11964144.

The previous prime is 12961163. The next prime is 12961177. The reversal of 12961169 is 96116921.

12961169 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5121169 + 7840000 = 2263^2 + 2800^2 .

It is a cyclic number.

It is not a de Polignac number, because 12961169 - 2⁴ = 12961153 is a prime.

It is a super-2 number, since 2×12961169² = 335983803693122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12961163) 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, 498494 + ... + 498519.

It is an arithmetic number, because the mean of its divisors is an integer number (3489549).

Almost surely, 2^12961169 is an apocalyptic number.

It is an amenable number.

12961169 is a deficient number, since it is larger than the sum of its proper divisors (997027).

12961169 is an equidigital number, since it uses as much as digits as its factorization.

12961169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997026.

The product of its digits is 5832, while the sum is 35.

The square root of 12961169 is about 3600.1623574500. The cubic root of 12961169 is about 234.8991207274.

The spelling of 12961169 in words is "twelve million, nine hundred sixty-one thousand, one hundred sixty-nine".