12459899 has 4 divisors (see below), whose sum is σ = 12574320. Its totient is φ = 12345480.

The previous prime is 12459871. The next prime is 12459907. The reversal of 12459899 is 99895421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99895421 = 79 ⋅1264499.

It is a cyclic number.

It is not a de Polignac number, because 12459899 - 2¹² = 12455803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12459869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57047 + ... + 57264.

It is an arithmetic number, because the mean of its divisors is an integer number (3143580).

Almost surely, 2^12459899 is an apocalyptic number.

12459899 is a deficient number, since it is larger than the sum of its proper divisors (114421).

12459899 is a wasteful number, since it uses less digits than its factorization.

12459899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114420.

The product of its digits is 233280, while the sum is 47.

The square root of 12459899 is about 3529.8582124499. The cubic root of 12459899 is about 231.8309993449.

The spelling of 12459899 in words is "twelve million, four hundred fifty-nine thousand, eight hundred ninety-nine".