478993 has 8 divisors (see below), whose sum is σ = 504000. Its totient is φ = 454608.

The previous prime is 478991. The next prime is 478999. The reversal of 478993 is 399874.

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

It is a cyclic number.

It is not a de Polignac number, because 478993 - 2¹ = 478991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478991) 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, 2308 + ... + 2506.

It is an arithmetic number, because the mean of its divisors is an integer number (63000).

2⁴⁷⁸⁹⁹³ is an apocalyptic number.

It is an amenable number.

478993 is a deficient number, since it is larger than the sum of its proper divisors (25007).

478993 is a wasteful number, since it uses less digits than its factorization.

478993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311.

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

The square root of 478993 is about 692.0932018161. The cubic root of 478993 is about 78.2425607153.

The spelling of 478993 in words is "four hundred seventy-eight thousand, nine hundred ninety-three".