1304993 has 4 divisors (see below), whose sum is σ = 1307460. Its totient is φ = 1302528.

The previous prime is 1304987. The next prime is 1305011. The reversal of 1304993 is 3994031.

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 954529 + 350464 = 977^2 + 592^2 .

It is a cyclic number.

It is not a de Polignac number, because 1304993 - 2⁶ = 1304929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1304923) 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, 80 + ... + 1617.

It is an arithmetic number, because the mean of its divisors is an integer number (326865).

2^1304993 is an apocalyptic number.

It is an amenable number.

1304993 is a deficient number, since it is larger than the sum of its proper divisors (2467).

1304993 is an equidigital number, since it uses as much as digits as its factorization.

1304993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2466.

The product of its (nonzero) digits is 2916, while the sum is 29.

The square root of 1304993 is about 1142.3629020587. The cubic root of 1304993 is about 109.2788360748.

The spelling of 1304993 in words is "one million, three hundred four thousand, nine hundred ninety-three".