12429409 has 2 divisors, whose sum is σ = 12429410. Its totient is φ = 12429408.

The previous prime is 12429383. The next prime is 12429449. The reversal of 12429409 is 90492421.

It is a happy number.

12429409 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., 11881809 + 547600 = 3447^2 + 740^2 .

It is a cyclic number.

It is not a de Polignac number, because 12429409 - 2¹³ = 12421217 is a prime.

It is not a weakly prime, because it can be changed into another prime (12429449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6214704 + 6214705.

It is an arithmetic number, because the mean of its divisors is an integer number (6214705).

Almost surely, 2^12429409 is an apocalyptic number.

It is an amenable number.

12429409 is a deficient number, since it is larger than the sum of its proper divisors (1).

12429409 is an equidigital number, since it uses as much as digits as its factorization.

12429409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 12429409 is about 3525.5366967314. The cubic root of 12429409 is about 231.6417441805.

The spelling of 12429409 in words is "twelve million, four hundred twenty-nine thousand, four hundred nine".