493819 has 4 divisors (see below), whose sum is σ = 496944. Its totient is φ = 490696.

The previous prime is 493817. The next prime is 493853. The reversal of 493819 is 918394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 493819 - 2¹ = 493817 is a prime.

It is a super-2 number, since 2×493819² = 487714409522, which contains 22 as substring.

It is a Duffinian number.

493819 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (493811) 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, 1312 + ... + 1645.

It is an arithmetic number, because the mean of its divisors is an integer number (124236).

2⁴⁹³⁸¹⁹ is an apocalyptic number.

493819 is a deficient number, since it is larger than the sum of its proper divisors (3125).

493819 is a wasteful number, since it uses less digits than its factorization.

493819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124.

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

The square root of 493819 is about 702.7225626092. The cubic root of 493819 is about 79.0416380406.

The spelling of 493819 in words is "four hundred ninety-three thousand, eight hundred nineteen".