12199669 has 2 divisors, whose sum is σ = 12199670. Its totient is φ = 12199668.

The previous prime is 12199643. The next prime is 12199697. The reversal of 12199669 is 96699121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11122225 + 1077444 = 3335^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 12199669 - 2⁹ = 12199157 is a prime.

It is a super-2 number, since 2×12199669² = 297663847419122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12199609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6099834 + 6099835.

It is an arithmetic number, because the mean of its divisors is an integer number (6099835).

Almost surely, 2^12199669 is an apocalyptic number.

It is an amenable number.

12199669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12199669 is an equidigital number, since it uses as much as digits as its factorization.

12199669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 43.

The square root of 12199669 is about 3492.8024564810. The cubic root of 12199669 is about 230.2056698440.

The spelling of 12199669 in words is "twelve million, one hundred ninety-nine thousand, six hundred sixty-nine".