12492399 has 16 divisors (see below), whose sum is σ = 17709408. Its totient is φ = 7805952.

The previous prime is 12492397. The next prime is 12492409. The reversal of 12492399 is 99329421.

It is not a de Polignac number, because 12492399 - 2¹ = 12492397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12492391) 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 15 ways as a sum of consecutive naturals, for example, 19939 + ... + 20555.

It is an arithmetic number, because the mean of its divisors is an integer number (1106838).

Almost surely, 2^12492399 is an apocalyptic number.

12492399 is a deficient number, since it is larger than the sum of its proper divisors (5217009).

12492399 is a wasteful number, since it uses less digits than its factorization.

12492399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034.

The product of its digits is 34992, while the sum is 39.

The square root of 12492399 is about 3534.4587987413. The cubic root of 12492399 is about 232.0323911869.

The spelling of 12492399 in words is "twelve million, four hundred ninety-two thousand, three hundred ninety-nine".