12973591 has 4 divisors (see below), whose sum is σ = 12981384. Its totient is φ = 12965800.

The previous prime is 12973577. The next prime is 12973603. The reversal of 12973591 is 19537921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12973591 - 2⁵ = 12973559 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 12973591.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12973511) 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, 280 + ... + 5101.

It is an arithmetic number, because the mean of its divisors is an integer number (3245346).

Almost surely, 2^12973591 is an apocalyptic number.

12973591 is a deficient number, since it is larger than the sum of its proper divisors (7793).

12973591 is an equidigital number, since it uses as much as digits as its factorization.

12973591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7792.

The product of its digits is 17010, while the sum is 37.

The square root of 12973591 is about 3601.8871442620. The cubic root of 12973591 is about 234.9741393000.

The spelling of 12973591 in words is "twelve million, nine hundred seventy-three thousand, five hundred ninety-one".