12859478 has 4 divisors (see below), whose sum is σ = 19289220. Its totient is φ = 6429738.

The previous prime is 12859453. The next prime is 12859481. The reversal of 12859478 is 87495821.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3214868 + ... + 3214871.

It is an arithmetic number, because the mean of its divisors is an integer number (4822305).

Almost surely, 2^12859478 is an apocalyptic number.

12859478 is a deficient number, since it is larger than the sum of its proper divisors (6429742).

12859478 is an equidigital number, since it uses as much as digits as its factorization.

12859478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429741.

The product of its digits is 161280, while the sum is 44.

The square root of 12859478 is about 3586.0114333337. The cubic root of 12859478 is about 234.2831816459.

The spelling of 12859478 in words is "twelve million, eight hundred fifty-nine thousand, four hundred seventy-eight".