479840 has 24 divisors (see below), whose sum is σ = 1134000. Its totient is φ = 191872.

The previous prime is 479839. The next prime is 479861. The reversal of 479840 is 48974.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 479797 and 479806.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 479840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340 + ... + 1659.

It is an arithmetic number, because the mean of its divisors is an integer number (47250).

2⁴⁷⁹⁸⁴⁰ is an apocalyptic number.

479840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

479840 is an abundant number, since it is smaller than the sum of its proper divisors (654160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

479840 is a wasteful number, since it uses less digits than its factorization.

479840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014 (or 3006 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 479840 is about 692.7048433496. The cubic root of 479840 is about 78.2886521507.

The spelling of 479840 in words is "four hundred seventy-nine thousand, eight hundred forty".