12115479 has 4 divisors (see below), whose sum is σ = 16153976. Its totient is φ = 8076984.

The previous prime is 12115471. The next prime is 12115501. The reversal of 12115479 is 97451121.

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

It is not a de Polignac number, because 12115479 - 2³ = 12115471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115471) 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, 2019244 + ... + 2019249.

It is an arithmetic number, because the mean of its divisors is an integer number (4038494).

Almost surely, 2^12115479 is an apocalyptic number.

12115479 is a deficient number, since it is larger than the sum of its proper divisors (4038497).

12115479 is an equidigital number, since it uses as much as digits as its factorization.

12115479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038496.

The product of its digits is 2520, while the sum is 30.

The square root of 12115479 is about 3480.7296648835. The cubic root of 12115479 is about 229.6748967031.

It can be divided in two parts, 12115 and 479, that multiplied together give a palindrome (5803085).

The spelling of 12115479 in words is "twelve million, one hundred fifteen thousand, four hundred seventy-nine".