12279489 has 4 divisors (see below), whose sum is σ = 16372656. Its totient is φ = 8186324.

The previous prime is 12279473. The next prime is 12279497. The reversal of 12279489 is 98497221.

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 12279489 - 2⁴ = 12279473 is a prime.

It is a super-2 number, since 2×12279489² = 301571700202242, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12279489.

It is not an unprimeable number, because it can be changed into a prime (12279439) 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, 2046579 + ... + 2046584.

It is an arithmetic number, because the mean of its divisors is an integer number (4093164).

Almost surely, 2^12279489 is an apocalyptic number.

It is an amenable number.

12279489 is a deficient number, since it is larger than the sum of its proper divisors (4093167).

12279489 is an equidigital number, since it uses as much as digits as its factorization.

12279489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093166.

The product of its digits is 72576, while the sum is 42.

The square root of 12279489 is about 3504.2101820524. The cubic root of 12279489 is about 230.7066420948.

The spelling of 12279489 in words is "twelve million, two hundred seventy-nine thousand, four hundred eighty-nine".