12438407 has 16 divisors (see below), whose sum is σ = 14041440. Its totient is φ = 10948608.

The previous prime is 12438403. The next prime is 12438421. The reversal of 12438407 is 70483421.

It is a cyclic number.

It is not a de Polignac number, because 12438407 - 2² = 12438403 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 12438407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12438403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31133 + ... + 31529.

It is an arithmetic number, because the mean of its divisors is an integer number (877590).

Almost surely, 2^12438407 is an apocalyptic number.

12438407 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

12438407 is a deficient number, since it is larger than the sum of its proper divisors (1603033).

12438407 is a wasteful number, since it uses less digits than its factorization.

12438407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 12438407 is about 3526.8125836228. The cubic root of 12438407 is about 231.6976280296.

The spelling of 12438407 in words is "twelve million, four hundred thirty-eight thousand, four hundred seven".