12478413 has 4 divisors (see below), whose sum is σ = 16637888. Its totient is φ = 8318940.

The previous prime is 12478409. The next prime is 12478451. The reversal of 12478413 is 31487421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12478413 - 2² = 12478409 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12478483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2079733 + ... + 2079738.

It is an arithmetic number, because the mean of its divisors is an integer number (4159472).

Almost surely, 2^12478413 is an apocalyptic number.

It is an amenable number.

12478413 is a deficient number, since it is larger than the sum of its proper divisors (4159475).

12478413 is an equidigital number, since it uses as much as digits as its factorization.

12478413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159474.

The product of its digits is 5376, while the sum is 30.

The square root of 12478413 is about 3532.4797239333. The cubic root of 12478413 is about 231.9457673968.

The spelling of 12478413 in words is "twelve million, four hundred seventy-eight thousand, four hundred thirteen".