12340399 has 8 divisors (see below), whose sum is σ = 12841920. Its totient is φ = 11844000.

The previous prime is 12340373. The next prime is 12340403. The reversal of 12340399 is 99304321.

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

It is a cyclic number.

It is not a de Polignac number, because 12340399 - 2⁷ = 12340271 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12340399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12340309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4074 + ... + 6424.

It is an arithmetic number, because the mean of its divisors is an integer number (1605240).

Almost surely, 2^12340399 is an apocalyptic number.

12340399 is a deficient number, since it is larger than the sum of its proper divisors (501521).

12340399 is a wasteful number, since it uses less digits than its factorization.

12340399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2561.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 12340399 is about 3512.8904053500. The cubic root of 12340399 is about 231.0874714805.

The spelling of 12340399 in words is "twelve million, three hundred forty thousand, three hundred ninety-nine".