12489179 has 4 divisors (see below), whose sum is σ = 12700920. Its totient is φ = 12277440.

The previous prime is 12489167. The next prime is 12489229. The reversal of 12489179 is 97198421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97198421 = 197 ⋅493393.

It is a cyclic number.

It is not a de Polignac number, because 12489179 - 2⁴ = 12489163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12489109) 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, 105782 + ... + 105899.

It is an arithmetic number, because the mean of its divisors is an integer number (3175230).

Almost surely, 2^12489179 is an apocalyptic number.

12489179 is a deficient number, since it is larger than the sum of its proper divisors (211741).

12489179 is an equidigital number, since it uses as much as digits as its factorization.

12489179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211740.

The product of its digits is 36288, while the sum is 41.

The square root of 12489179 is about 3534.0032541015. The cubic root of 12489179 is about 232.0124535031.

The spelling of 12489179 in words is "twelve million, four hundred eighty-nine thousand, one hundred seventy-nine".