12179474399 has 2 divisors, whose sum is σ = 12179474400. Its totient is φ = 12179474398.

The previous prime is 12179474393. The next prime is 12179474443. The reversal of 12179474399 is 99347497121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12179474399 - 2⁴ = 12179474383 is a prime.

It is a super-2 number, since 2×12179474399² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12179474393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6089737199 + 6089737200.

It is an arithmetic number, because the mean of its divisors is an integer number (6089737200).

Almost surely, 2^12179474399 is an apocalyptic number.

12179474399 is a deficient number, since it is larger than the sum of its proper divisors (1).

12179474399 is an equidigital number, since it uses as much as digits as its factorization.

12179474399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3429216, while the sum is 56.

The spelling of 12179474399 in words is "twelve billion, one hundred seventy-nine million, four hundred seventy-four thousand, three hundred ninety-nine".