12270779 has 4 divisors (see below), whose sum is σ = 12280776. Its totient is φ = 12260784.

The previous prime is 12270763. The next prime is 12270871. The reversal of 12270779 is 97707221.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12270779 - 2⁴ = 12270763 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12270749) 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, 2849 + ... + 5714.

It is an arithmetic number, because the mean of its divisors is an integer number (3070194).

Almost surely, 2^12270779 is an apocalyptic number.

12270779 is a deficient number, since it is larger than the sum of its proper divisors (9997).

12270779 is an equidigital number, since it uses as much as digits as its factorization.

12270779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9996.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 12270779 is about 3502.9671708425. The cubic root of 12270779 is about 230.6520814598.

The spelling of 12270779 in words is "twelve million, two hundred seventy thousand, seven hundred seventy-nine".