12393874 has 4 divisors (see below), whose sum is σ = 18590814. Its totient is φ = 6196936.

The previous prime is 12393869. The next prime is 12393877. The reversal of 12393874 is 47839321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10843849 + 1550025 = 3293^2 + 1245^2 .

It is a super-2 number, since 2×12393874² = 307216225455752, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12393877) 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 as a sum of consecutive naturals, namely, 3098467 + ... + 3098470.

Almost surely, 2^12393874 is an apocalyptic number.

12393874 is a deficient number, since it is larger than the sum of its proper divisors (6196940).

12393874 is an equidigital number, since it uses as much as digits as its factorization.

12393874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6196939.

The product of its digits is 36288, while the sum is 37.

The square root of 12393874 is about 3520.4934313246. The cubic root of 12393874 is about 231.4207831188.

The spelling of 12393874 in words is "twelve million, three hundred ninety-three thousand, eight hundred seventy-four".