12973091 has 4 divisors (see below), whose sum is σ = 13736232. Its totient is φ = 12209952.

The previous prime is 12973069. The next prime is 12973099. The reversal of 12973091 is 19037921.

It is a happy number.

12973091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12973091 - 2⁶ = 12973027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12973099) 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, 381545 + ... + 381578.

It is an arithmetic number, because the mean of its divisors is an integer number (3434058).

Almost surely, 2^12973091 is an apocalyptic number.

12973091 is a deficient number, since it is larger than the sum of its proper divisors (763141).

12973091 is an equidigital number, since it uses as much as digits as its factorization.

12973091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763140.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 12973091 is about 3601.8177355330. The cubic root of 12973091 is about 234.9711206401.

The spelling of 12973091 in words is "twelve million, nine hundred seventy-three thousand, ninety-one".