12393969 has 32 divisors (see below), whose sum is σ = 20217600. Its totient is φ = 6592512.

The previous prime is 12393967. The next prime is 12393971. The reversal of 12393969 is 96939321.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12393967) and next prime (12393971).

It is not a de Polignac number, because 12393969 - 2¹ = 12393967 is a prime.

It is a super-2 number, since 2×12393969² = 307220935145922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12393969.

It is not an unprimeable number, because it can be changed into a prime (12393967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53077 + ... + 53309.

It is an arithmetic number, because the mean of its divisors is an integer number (631800).

Almost surely, 2^12393969 is an apocalyptic number.

It is an amenable number.

12393969 is a deficient number, since it is larger than the sum of its proper divisors (7823631).

12393969 is a wasteful number, since it uses less digits than its factorization.

12393969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409.

The product of its digits is 78732, while the sum is 42.

The square root of 12393969 is about 3520.5069237256. The cubic root of 12393969 is about 231.4213744033.

The spelling of 12393969 in words is "twelve million, three hundred ninety-three thousand, nine hundred sixty-nine".