12971938 has 8 divisors (see below), whose sum is σ = 22237632. Its totient is φ = 5559396.

The previous prime is 12971929. The next prime is 12971963. The reversal of 12971938 is 83917921.

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

It is a self number, because there is not a number n which added to its sum of digits gives 12971938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 463270 + ... + 463297.

It is an arithmetic number, because the mean of its divisors is an integer number (2779704).

Almost surely, 2^12971938 is an apocalyptic number.

12971938 is a deficient number, since it is larger than the sum of its proper divisors (9265694).

12971938 is an equidigital number, since it uses as much as digits as its factorization.

12971938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926576.

The product of its digits is 27216, while the sum is 40.

The square root of 12971938 is about 3601.6576739052. The cubic root of 12971938 is about 234.9641593145.

The spelling of 12971938 in words is "twelve million, nine hundred seventy-one thousand, nine hundred thirty-eight".