12972939 has 8 divisors (see below), whose sum is σ = 19768320. Its totient is φ = 7413096.

The previous prime is 12972937. The next prime is 12972959. The reversal of 12972939 is 93927921.

It is a happy number.

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

It is not a de Polignac number, because 12972939 - 2¹ = 12972937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12972939.

It is not an unprimeable number, because it can be changed into a prime (12972937) 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, 308859 + ... + 308900.

It is an arithmetic number, because the mean of its divisors is an integer number (2471040).

Almost surely, 2^12972939 is an apocalyptic number.

12972939 is a deficient number, since it is larger than the sum of its proper divisors (6795381).

12972939 is an equidigital number, since it uses as much as digits as its factorization.

12972939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617769.

The product of its digits is 61236, while the sum is 42.

The square root of 12972939 is about 3601.7966350143. The cubic root of 12972939 is about 234.9702029521.

The spelling of 12972939 in words is "twelve million, nine hundred seventy-two thousand, nine hundred thirty-nine".