12398669 has 2 divisors, whose sum is σ = 12398670. Its totient is φ = 12398668.

The previous prime is 12398651. The next prime is 12398671. The reversal of 12398669 is 96689321.

12398669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9796900 + 2601769 = 3130^2 + 1613^2 .

It is a cyclic number.

It is not a de Polignac number, because 12398669 - 2⁸ = 12398413 is a prime.

It is a super-2 number, since 2×12398669² = 307453985943122, which contains 22 as substring.

Together with 12398671, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12398369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6199334 + 6199335.

It is an arithmetic number, because the mean of its divisors is an integer number (6199335).

Almost surely, 2^12398669 is an apocalyptic number.

It is an amenable number.

12398669 is a deficient number, since it is larger than the sum of its proper divisors (1).

12398669 is an equidigital number, since it uses as much as digits as its factorization.

12398669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 12398669 is about 3521.1743779597. The cubic root of 12398669 is about 231.4506236562.

The spelling of 12398669 in words is "twelve million, three hundred ninety-eight thousand, six hundred sixty-nine".