12791973 has 16 divisors (see below), whose sum is σ = 18550080. Its totient is φ = 7808256.

The previous prime is 12791969. The next prime is 12791981. The reversal of 12791973 is 37919721.

It is not a de Polignac number, because 12791973 - 2² = 12791969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12791983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1503 + ... + 5276.

It is an arithmetic number, because the mean of its divisors is an integer number (1159380).

Almost surely, 2^12791973 is an apocalyptic number.

It is an amenable number.

12791973 is a deficient number, since it is larger than the sum of its proper divisors (5758107).

12791973 is a wasteful number, since it uses less digits than its factorization.

12791973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6836.

The product of its digits is 23814, while the sum is 39.

The square root of 12791973 is about 3576.5867807171. The cubic root of 12791973 is about 233.8725107270.

It can be divided in two parts, 1279197 and 3, that added together give a triangular number (1279200 = T₁₅₉₉).

The spelling of 12791973 in words is "twelve million, seven hundred ninety-one thousand, nine hundred seventy-three".