12479794369 has 9 divisors (see below), whose sum is σ = 14518221537. Its totient is φ = 10696296324.

The previous prime is 12479794361. The next prime is 12479794381. The reversal of 12479794369 is 96349797421.

The square root of 12479794369 is 111713.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 12479794369 - 2³ = 12479794361 is a prime.

It is a super-2 number, since 2×12479794369² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12479794361) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 774012 + ... + 789970.

Almost surely, 2^12479794369 is an apocalyptic number.

12479794369 is the 111713-rd square number.

12479794369 is the 55857-th centered octagonal number.

It is an amenable number.

12479794369 is a deficient number, since it is larger than the sum of its proper divisors (2038427168).

12479794369 is an frugal number, since it uses more digits than its factorization.

12479794369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31932 (or 15966 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 61.

The spelling of 12479794369 in words is "twelve billion, four hundred seventy-nine million, seven hundred ninety-four thousand, three hundred sixty-nine".