12399508 has 12 divisors (see below), whose sum is σ = 23671872. Its totient is φ = 5636120.

The previous prime is 12399503. The next prime is 12399539. The reversal of 12399508 is 80599321.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399503) by changing a digit.

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, 140860 + ... + 140947.

It is an arithmetic number, because the mean of its divisors is an integer number (1972656).

Almost surely, 2^12399508 is an apocalyptic number.

It is an amenable number.

12399508 is a deficient number, since it is larger than the sum of its proper divisors (11272364).

12399508 is a wasteful number, since it uses less digits than its factorization.

12399508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281822 (or 281820 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 12399508 is about 3521.2935123332. The cubic root of 12399508 is about 231.4558441814.

The spelling of 12399508 in words is "twelve million, three hundred ninety-nine thousand, five hundred eight".