12209949079 has 2 divisors, whose sum is σ = 12209949080. Its totient is φ = 12209949078.

The previous prime is 12209949077. The next prime is 12209949091. The reversal of 12209949079 is 97094990221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12209949079 - 2¹ = 12209949077 is a prime.

Together with 12209949077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12209949077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6104974539 + 6104974540.

It is an arithmetic number, because the mean of its divisors is an integer number (6104974540).

Almost surely, 2^12209949079 is an apocalyptic number.

12209949079 is a deficient number, since it is larger than the sum of its proper divisors (1).

12209949079 is an equidigital number, since it uses as much as digits as its factorization.

12209949079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 734832, while the sum is 52.

The spelling of 12209949079 in words is "twelve billion, two hundred nine million, nine hundred forty-nine thousand, seventy-nine".