12091349 has 4 divisors (see below), whose sum is σ = 12111564. Its totient is φ = 12071136.

The previous prime is 12091337. The next prime is 12091363. The reversal of 12091349 is 94319021.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2010724 + 10080625 = 1418^2 + 3175^2 .

It is a cyclic number.

It is not a de Polignac number, because 12091349 - 2¹⁶ = 12025813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12091319) 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, 9182 + ... + 10415.

It is an arithmetic number, because the mean of its divisors is an integer number (3027891).

Almost surely, 2^12091349 is an apocalyptic number.

It is an amenable number.

12091349 is a deficient number, since it is larger than the sum of its proper divisors (20215).

12091349 is an equidigital number, since it uses as much as digits as its factorization.

12091349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20214.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12091349 is about 3477.2617100241. The cubic root of 12091349 is about 229.5223167227.

The spelling of 12091349 in words is "twelve million, ninety-one thousand, three hundred forty-nine".