12399488 has 32 divisors (see below), whose sum is σ = 25059360. Its totient is φ = 6110208.

The previous prime is 12399487. The next prime is 12399503. The reversal of 12399488 is 88499321.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12399487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8681 + ... + 10007.

It is an arithmetic number, because the mean of its divisors is an integer number (783105).

Almost surely, 2^12399488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12399488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12529680).

12399488 is an abundant number, since it is smaller than the sum of its proper divisors (12659872).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12399488 is an equidigital number, since it uses as much as digits as its factorization.

12399488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1414 (or 1402 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 12399488 is about 3521.2906724666. The cubic root of 12399488 is about 231.4557197378.

The spelling of 12399488 in words is "twelve million, three hundred ninety-nine thousand, four hundred eighty-eight".