12418393 has 4 divisors (see below), whose sum is σ = 13373668. Its totient is φ = 11463120.

The previous prime is 12418369. The next prime is 12418411. The reversal of 12418393 is 39381421.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3579664 + 8838729 = 1892^2 + 2973^2 .

It is a cyclic number.

It is not a de Polignac number, because 12418393 - 2¹³ = 12410201 is a prime.

It is a super-3 number, since 3×12418393³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12418303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 477618 + ... + 477643.

It is an arithmetic number, because the mean of its divisors is an integer number (3343417).

Almost surely, 2^12418393 is an apocalyptic number.

12418393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12418393 is a deficient number, since it is larger than the sum of its proper divisors (955275).

12418393 is an equidigital number, since it uses as much as digits as its factorization.

12418393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 955274.

The product of its digits is 5184, while the sum is 31.

The square root of 12418393 is about 3523.9740350916. The cubic root of 12418393 is about 231.5732904111.

The spelling of 12418393 in words is "twelve million, four hundred eighteen thousand, three hundred ninety-three".