12387399 has 8 divisors (see below), whose sum is σ = 16663152. Its totient is φ = 8184960.

The previous prime is 12387377. The next prime is 12387433. The reversal of 12387399 is 99378321.

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

It is not a de Polignac number, because 12387399 - 2¹³ = 12379207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12387399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387329) 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 7 ways as a sum of consecutive naturals, for example, 17932 + ... + 18609.

It is an arithmetic number, because the mean of its divisors is an integer number (2082894).

Almost surely, 2^12387399 is an apocalyptic number.

12387399 is a deficient number, since it is larger than the sum of its proper divisors (4275753).

12387399 is a wasteful number, since it uses less digits than its factorization.

12387399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36657.

The product of its digits is 81648, while the sum is 42.

The square root of 12387399 is about 3519.5736957762. The cubic root of 12387399 is about 231.3804752862.

The spelling of 12387399 in words is "twelve million, three hundred eighty-seven thousand, three hundred ninety-nine".