493987 has 12 divisors (see below), whose sum is σ = 556320. Its totient is φ = 438048.

The previous prime is 493979. The next prime is 493993. The reversal of 493987 is 789394.

It is not a de Polignac number, because 493987 - 2³ = 493979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (493937) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6214 + ... + 6292.

It is an arithmetic number, because the mean of its divisors is an integer number (46360).

493987 is a Friedman number, since it can be written as 948+79^3, using all its digits and the basic arithmetic operations.

2⁴⁹³⁹⁸⁷ is an apocalyptic number.

493987 is a deficient number, since it is larger than the sum of its proper divisors (62333).

493987 is a wasteful number, since it uses less digits than its factorization.

493987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 129 counting only the distinct ones).

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

The square root of 493987 is about 702.8420875275. The cubic root of 493987 is about 79.0506004942.

It can be divided in two parts, 493 and 987, that multiplied together give a triangular number (486591 = T₉₈₆).

The spelling of 493987 in words is "four hundred ninety-three thousand, nine hundred eighty-seven".