493869 has 4 divisors (see below), whose sum is σ = 658496. Its totient is φ = 329244.

The previous prime is 493859. The next prime is 493873. The reversal of 493869 is 968394.

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.

It is not a de Polignac number, because 493869 - 2⁴ = 493853 is a prime.

It is a super-2 number, since 2×493869² = 487813178322, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

493869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493859) 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, 82309 + ... + 82314.

It is an arithmetic number, because the mean of its divisors is an integer number (164624).

2⁴⁹³⁸⁶⁹ is an apocalyptic number.

It is an amenable number.

493869 is a deficient number, since it is larger than the sum of its proper divisors (164627).

493869 is a wasteful number, since it uses less digits than its factorization.

493869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164626.

The product of its digits is 46656, while the sum is 39.

The square root of 493869 is about 702.7581376263. The cubic root of 493869 is about 79.0443056500.

The spelling of 493869 in words is "four hundred ninety-three thousand, eight hundred sixty-nine".