12195445 has 16 divisors (see below), whose sum is σ = 15124032. Its totient is φ = 9434880.

The previous prime is 12195437. The next prime is 12195461. The reversal of 12195445 is 54459121.

It is not a de Polignac number, because 12195445 - 2³ = 12195437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 27949 + ... + 28381.

It is an arithmetic number, because the mean of its divisors is an integer number (945252).

Almost surely, 2^12195445 is an apocalyptic number.

It is an amenable number.

12195445 is a deficient number, since it is larger than the sum of its proper divisors (2928587).

12195445 is a wasteful number, since it uses less digits than its factorization.

12195445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its digits is 7200, while the sum is 31.

The square root of 12195445 is about 3492.1977320879. The cubic root of 12195445 is about 230.1790980576.

The spelling of 12195445 in words is "twelve million, one hundred ninety-five thousand, four hundred forty-five".