1004393 has 4 divisors (see below), whose sum is σ = 1081668. Its totient is φ = 927120.

The previous prime is 1004371. The next prime is 1004401. The reversal of 1004393 is 3934001.

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 444889 + 559504 = 667^2 + 748^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004393 - 2⁸ = 1004137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1004303) 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, 38618 + ... + 38643.

It is an arithmetic number, because the mean of its divisors is an integer number (270417).

2^1004393 is an apocalyptic number.

1004393 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1004393 is a deficient number, since it is larger than the sum of its proper divisors (77275).

1004393 is an equidigital number, since it uses as much as digits as its factorization.

1004393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77274.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 1004393 is about 1002.1940929780. The cubic root of 1004393 is about 100.1462194279.

Adding to 1004393 its reverse (3934001), we get a palindrome (4938394).

The spelling of 1004393 in words is "one million, four thousand, three hundred ninety-three".