12091393 has 4 divisors (see below), whose sum is σ = 12098560. Its totient is φ = 12084228.

The previous prime is 12091381. The next prime is 12091411. The reversal of 12091393 is 39319021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12091393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12091363) 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, 496 + ... + 4942.

It is an arithmetic number, because the mean of its divisors is an integer number (3024640).

It is a Proth number, since it is equal to 369 ⋅ 2¹⁵ + 1 and 369 < 2¹⁵.

Almost surely, 2^12091393 is an apocalyptic number.

It is an amenable number.

12091393 is a deficient number, since it is larger than the sum of its proper divisors (7167).

12091393 is an equidigital number, since it uses as much as digits as its factorization.

12091393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7166.

The product of its (nonzero) digits is 1458, while the sum is 28.

The square root of 12091393 is about 3477.2680368358. The cubic root of 12091393 is about 229.5225951303.

The spelling of 12091393 in words is "twelve million, ninety-one thousand, three hundred ninety-three".