493851 has 4 divisors (see below), whose sum is σ = 658472. Its totient is φ = 329232.

The previous prime is 493817. The next prime is 493853. The reversal of 493851 is 158394.

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

It is a de Polignac number, because none of the positive numbers 2^k-493851 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 493851.

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 in 3 ways as a sum of consecutive naturals, for example, 82306 + ... + 82311.

It is an arithmetic number, because the mean of its divisors is an integer number (164618).

2⁴⁹³⁸⁵¹ is an apocalyptic number.

493851 is a deficient number, since it is larger than the sum of its proper divisors (164621).

493851 is a wasteful number, since it uses less digits than its factorization.

493851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164620.

The product of its digits is 4320, while the sum is 30.

The square root of 493851 is about 702.7453308276. The cubic root of 493851 is about 79.0433453313.

The spelling of 493851 in words is "four hundred ninety-three thousand, eight hundred fifty-one".