12429899 has 4 divisors (see below), whose sum is σ = 12605040. Its totient is φ = 12254760.

The previous prime is 12429889. The next prime is 12429947. The reversal of 12429899 is 99892421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99892421 = 997 ⋅100193.

It is a cyclic number.

It is not a de Polignac number, because 12429899 - 2⁴ = 12429883 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12429889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87464 + ... + 87605.

It is an arithmetic number, because the mean of its divisors is an integer number (3151260).

Almost surely, 2^12429899 is an apocalyptic number.

12429899 is a deficient number, since it is larger than the sum of its proper divisors (175141).

12429899 is an equidigital number, since it uses as much as digits as its factorization.

12429899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175140.

The product of its digits is 93312, while the sum is 44.

The square root of 12429899 is about 3525.6061890120. The cubic root of 12429899 is about 231.6447881161.

The spelling of 12429899 in words is "twelve million, four hundred twenty-nine thousand, eight hundred ninety-nine".