12811479 has 8 divisors (see below), whose sum is σ = 17099520. Its totient is φ = 8532216.

The previous prime is 12811471. The next prime is 12811481. The reversal of 12811479 is 97411821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12811479 - 2³ = 12811471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12811471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2914 + ... + 5840.

It is an arithmetic number, because the mean of its divisors is an integer number (2137440).

Almost surely, 2^12811479 is an apocalyptic number.

12811479 is a deficient number, since it is larger than the sum of its proper divisors (4288041).

12811479 is a wasteful number, since it uses less digits than its factorization.

12811479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4389.

The product of its digits is 4032, while the sum is 33.

The square root of 12811479 is about 3579.3126435113. The cubic root of 12811479 is about 233.9913248300.

The spelling of 12811479 in words is "twelve million, eight hundred eleven thousand, four hundred seventy-nine".