12379779 has 6 divisors (see below), whose sum is σ = 17881916. Its totient is φ = 8253180.

The previous prime is 12379777. The next prime is 12379789. The reversal of 12379779 is 97797321.

It is not a de Polignac number, because 12379779 - 2¹ = 12379777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12379771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 687757 + ... + 687774.

Almost surely, 2^12379779 is an apocalyptic number.

12379779 is a deficient number, since it is larger than the sum of its proper divisors (5502137).

12379779 is a wasteful number, since it uses less digits than its factorization.

12379779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375537 (or 1375534 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 12379779 is about 3518.4910117833. The cubic root of 12379779 is about 231.3330216637. Note that the first 3 decimals are identical.

The spelling of 12379779 in words is "twelve million, three hundred seventy-nine thousand, seven hundred seventy-nine".