12161769 has 4 divisors (see below), whose sum is σ = 16215696. Its totient is φ = 8107844.

The previous prime is 12161719. The next prime is 12161771. The reversal of 12161769 is 96716121.

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 12161769 - 2²¹ = 10064617 is a prime.

It is a super-2 number, since 2×12161769² = 295817250418722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12161719) 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 3 ways as a sum of consecutive naturals, for example, 2026959 + ... + 2026964.

It is an arithmetic number, because the mean of its divisors is an integer number (4053924).

Almost surely, 2^12161769 is an apocalyptic number.

It is an amenable number.

12161769 is a deficient number, since it is larger than the sum of its proper divisors (4053927).

12161769 is an equidigital number, since it uses as much as digits as its factorization.

12161769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4053926.

The product of its digits is 4536, while the sum is 33.

The square root of 12161769 is about 3487.3727933790. The cubic root of 12161769 is about 229.9670337124.

The spelling of 12161769 in words is "twelve million, one hundred sixty-one thousand, seven hundred sixty-nine".