12134779 has 4 divisors (see below), whose sum is σ = 12462784. Its totient is φ = 11806776.

The previous prime is 12134743. The next prime is 12134807. The reversal of 12134779 is 97743121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12134779 - 2¹⁹ = 11610491 is a prime.

It is a super-2 number, since 2×12134779² = 294505722757682, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12134879) 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, 163947 + ... + 164020.

It is an arithmetic number, because the mean of its divisors is an integer number (3115696).

Almost surely, 2^12134779 is an apocalyptic number.

12134779 is a deficient number, since it is larger than the sum of its proper divisors (328005).

12134779 is an equidigital number, since it uses as much as digits as its factorization.

12134779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328004.

The product of its digits is 10584, while the sum is 34.

The square root of 12134779 is about 3483.5009688530. The cubic root of 12134779 is about 229.7967896359.

The spelling of 12134779 in words is "twelve million, one hundred thirty-four thousand, seven hundred seventy-nine".