993489 has 8 divisors (see below), whose sum is σ = 1513920. Its totient is φ = 567696.

The previous prime is 993481. The next prime is 993493. The reversal of 993489 is 984399.

993489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 993489 - 2³ = 993481 is a prime.

993489 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 993489.

It is not an unprimeable number, because it can be changed into a prime (993481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23634 + ... + 23675.

It is an arithmetic number, because the mean of its divisors is an integer number (189240).

2⁹⁹³⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

993489 is a deficient number, since it is larger than the sum of its proper divisors (520431).

993489 is a wasteful number, since it uses less digits than its factorization.

993489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47319.

The product of its digits is 69984, while the sum is 42.

The square root of 993489 is about 996.7391835380. The cubic root of 993489 is about 99.7824939207.

The spelling of 993489 in words is "nine hundred ninety-three thousand, four hundred eighty-nine".