12279727396 has 6 divisors (see below), whose sum is σ = 21489522950. Its totient is φ = 6139863696.

The previous prime is 12279727367. The next prime is 12279727399. The reversal of 12279727396 is 69372797221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10784822500 + 1494904896 = 103850^2 + 38664^2 .

It is not an unprimeable number, because it can be changed into a prime (12279727399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1534965921 + ... + 1534965928.

Almost surely, 2^12279727396 is an apocalyptic number.

It is an amenable number.

12279727396 is a deficient number, since it is larger than the sum of its proper divisors (9209795554).

12279727396 is a wasteful number, since it uses less digits than its factorization.

12279727396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3069931853 (or 3069931851 counting only the distinct ones).

The product of its digits is 4000752, while the sum is 55.

The spelling of 12279727396 in words is "twelve billion, two hundred seventy-nine million, seven hundred twenty-seven thousand, three hundred ninety-six".