12197938 has 8 divisors (see below), whose sum is σ = 18791532. Its totient is φ = 5934096.

The previous prime is 12197921. The next prime is 12197947. The reversal of 12197938 is 83979121.

It can be written as a sum of positive squares in 2 ways, for example, as 8105409 + 4092529 = 2847^2 + 2023^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 12197938.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82345 + ... + 82492.

Almost surely, 2^12197938 is an apocalyptic number.

12197938 is a deficient number, since it is larger than the sum of its proper divisors (6593594).

12197938 is a wasteful number, since it uses less digits than its factorization.

12197938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164876.

The product of its digits is 27216, while the sum is 40.

The square root of 12197938 is about 3492.5546523999. The cubic root of 12197938 is about 230.1947814376.

The spelling of 12197938 in words is "twelve million, one hundred ninety-seven thousand, nine hundred thirty-eight".