12712091 has 8 divisors (see below), whose sum is σ = 14882784. Its totient is φ = 10630080.

The previous prime is 12712087. The next prime is 12712099. The reversal of 12712091 is 19021721.

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

It is a cyclic number.

It is not a de Polignac number, because 12712091 - 2² = 12712087 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12712099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21860 + ... + 22433.

It is an arithmetic number, because the mean of its divisors is an integer number (1860348).

Almost surely, 2^12712091 is an apocalyptic number.

12712091 is a deficient number, since it is larger than the sum of its proper divisors (2170693).

12712091 is an equidigital number, since it uses as much as digits as its factorization.

12712091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44341.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 12712091 is about 3565.4019408757. The cubic root of 12712091 is about 233.3846728301.

The spelling of 12712091 in words is "twelve million, seven hundred twelve thousand, ninety-one".