12481769 has 4 divisors (see below), whose sum is σ = 12489540. Its totient is φ = 12474000.

The previous prime is 12481673. The next prime is 12481771. The reversal of 12481769 is 96718421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96718421 = 293 ⋅330097.

It can be written as a sum of positive squares in 2 ways, for example, as 6697744 + 5784025 = 2588^2 + 2405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12481769 is a prime.

It is a super-2 number, since 2×12481769² = 311589114738722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12481169) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 482 + ... + 5019.

It is an arithmetic number, because the mean of its divisors is an integer number (3122385).

Almost surely, 2^12481769 is an apocalyptic number.

It is an amenable number.

12481769 is a deficient number, since it is larger than the sum of its proper divisors (7771).

12481769 is an equidigital number, since it uses as much as digits as its factorization.

12481769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7770.

The product of its digits is 24192, while the sum is 38.

The square root of 12481769 is about 3532.9547124185. The cubic root of 12481769 is about 231.9665590424.

The spelling of 12481769 in words is "twelve million, four hundred eighty-one thousand, seven hundred sixty-nine".