493858 has 4 divisors (see below), whose sum is σ = 740790. Its totient is φ = 246928.

The previous prime is 493853. The next prime is 493859. The reversal of 493858 is 858394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858394 = 2 ⋅429197.

It can be written as a sum of positive squares in only one way, i.e., 439569 + 54289 = 663^2 + 233^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (493853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123463 + ... + 123466.

2⁴⁹³⁸⁵⁸ is an apocalyptic number.

493858 is a deficient number, since it is larger than the sum of its proper divisors (246932).

493858 is a wasteful number, since it uses less digits than its factorization.

493858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246931.

The product of its digits is 34560, while the sum is 37.

The square root of 493858 is about 702.7503112771. The cubic root of 493858 is about 79.0437187914.

The spelling of 493858 in words is "four hundred ninety-three thousand, eight hundred fifty-eight".