493789 has 4 divisors (see below), whose sum is σ = 498780. Its totient is φ = 488800.

The previous prime is 493777. The next prime is 493793. The reversal of 493789 is 987394.

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 422500 + 71289 = 650^2 + 267^2 .

It is a cyclic number.

It is not a de Polignac number, because 493789 - 2⁹ = 493277 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493709) 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, 2344 + ... + 2545.

It is an arithmetic number, because the mean of its divisors is an integer number (124695).

2⁴⁹³⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

493789 is a deficient number, since it is larger than the sum of its proper divisors (4991).

493789 is a wasteful number, since it uses less digits than its factorization.

493789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4990.

The product of its digits is 54432, while the sum is 40.

The square root of 493789 is about 702.7012167344. The cubic root of 493789 is about 79.0400373886.

The spelling of 493789 in words is "four hundred ninety-three thousand, seven hundred eighty-nine".