12097139 has 4 divisors (see below), whose sum is σ = 12113640. Its totient is φ = 12080640.

The previous prime is 12097123. The next prime is 12097159. The reversal of 12097139 is 93179021.

It is a happy number.

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 12097139 - 2⁴ = 12097123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12097109) 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 3 ways as a sum of consecutive naturals, for example, 7097 + ... + 8634.

It is an arithmetic number, because the mean of its divisors is an integer number (3028410).

Almost surely, 2^12097139 is an apocalyptic number.

12097139 is a deficient number, since it is larger than the sum of its proper divisors (16501).

12097139 is an equidigital number, since it uses as much as digits as its factorization.

12097139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16500.

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

The square root of 12097139 is about 3478.0941620376. The cubic root of 12097139 is about 229.5589468276.

The spelling of 12097139 in words is "twelve million, ninety-seven thousand, one hundred thirty-nine".