1224393 has 4 divisors (see below), whose sum is σ = 1632528. Its totient is φ = 816260.

The previous prime is 1224389. The next prime is 1224403. The reversal of 1224393 is 3934221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3934221 = 3 ⋅1311407.

It is a cyclic number.

It is not a de Polignac number, because 1224393 - 2² = 1224389 is a prime.

It is an Ulam number.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1224193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204063 + ... + 204068.

It is an arithmetic number, because the mean of its divisors is an integer number (408132).

2^1224393 is an apocalyptic number.

It is an amenable number.

1224393 is a deficient number, since it is larger than the sum of its proper divisors (408135).

1224393 is an equidigital number, since it uses as much as digits as its factorization.

1224393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408134.

The product of its digits is 1296, while the sum is 24.

The square root of 1224393 is about 1106.5229324329. The cubic root of 1224393 is about 106.9810721462.

The spelling of 1224393 in words is "one million, two hundred twenty-four thousand, three hundred ninety-three".