12429889 has 2 divisors, whose sum is σ = 12429890. Its totient is φ = 12429888.

The previous prime is 12429883. The next prime is 12429947. The reversal of 12429889 is 98892421.

12429889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 4494400 = 2817^2 + 2120^2 .

It is a cyclic number.

It is not a de Polignac number, because 12429889 - 2¹¹ = 12427841 is a prime.

It is a super-3 number, since 3×12429889³ (a number of 22 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (12429883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214944 + 6214945.

It is an arithmetic number, because the mean of its divisors is an integer number (6214945).

Almost surely, 2^12429889 is an apocalyptic number.

It is an amenable number.

12429889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12429889 is an equidigital number, since it uses as much as digits as its factorization.

12429889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 43.

The square root of 12429889 is about 3525.6047708159. The cubic root of 12429889 is about 231.6447259958.

The spelling of 12429889 in words is "twelve million, four hundred twenty-nine thousand, eight hundred eighty-nine".