12194739 has 8 divisors (see below), whose sum is σ = 18066320. Its totient is φ = 8129808.

The previous prime is 12194731. The next prime is 12194759. The reversal of 12194739 is 93749121.

It is not a de Polignac number, because 12194739 - 2³ = 12194731 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12194731) 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, 225802 + ... + 225855.

It is an arithmetic number, because the mean of its divisors is an integer number (2258290).

Almost surely, 2^12194739 is an apocalyptic number.

12194739 is a deficient number, since it is larger than the sum of its proper divisors (5871581).

12194739 is an equidigital number, since it uses as much as digits as its factorization.

12194739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 451666 (or 451660 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 12194739 is about 3492.0966481471. The cubic root of 12194739 is about 230.1746562467.

The spelling of 12194739 in words is "twelve million, one hundred ninety-four thousand, seven hundred thirty-nine".