814993 has 4 divisors (see below), whose sum is σ = 822580. Its totient is φ = 807408.

The previous prime is 814991. The next prime is 815029. The reversal of 814993 is 399418.

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 693889 + 121104 = 833^2 + 348^2 .

It is a cyclic number.

It is not a de Polignac number, because 814993 - 2¹ = 814991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (814991) 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, 3630 + ... + 3847.

It is an arithmetic number, because the mean of its divisors is an integer number (205645).

2⁸¹⁴⁹⁹³ is an apocalyptic number.

It is an amenable number.

814993 is a deficient number, since it is larger than the sum of its proper divisors (7587).

814993 is a wasteful number, since it uses less digits than its factorization.

814993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7586.

The product of its digits is 7776, while the sum is 34.

The square root of 814993 is about 902.7696273136. The cubic root of 814993 is about 93.4081189151.

The spelling of 814993 in words is "eight hundred fourteen thousand, nine hundred ninety-three".