12399434 has 8 divisors (see below), whose sum is σ = 18681060. Its totient is φ = 6172416.

The previous prime is 12399427. The next prime is 12399451. The reversal of 12399434 is 43499321.

It can be written as a sum of positive squares in 2 ways, for example, as 11580409 + 819025 = 3403^2 + 905^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 12399394 and 12399403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13079 + ... + 13994.

Almost surely, 2^12399434 is an apocalyptic number.

12399434 is a deficient number, since it is larger than the sum of its proper divisors (6281626).

12399434 is a wasteful number, since it uses less digits than its factorization.

12399434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27304.

The product of its digits is 23328, while the sum is 35.

The square root of 12399434 is about 3521.2830048151. The cubic root of 12399434 is about 231.4553837393.

The spelling of 12399434 in words is "twelve million, three hundred ninety-nine thousand, four hundred thirty-four".