479809 has 8 divisors (see below), whose sum is σ = 533952. Its totient is φ = 427440.

The previous prime is 479797. The next prime is 479813. The reversal of 479809 is 908974.

479809 = 16³ + 17³ + ... + 37³.

It is a happy number.

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 479809 - 2⁵ = 479777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (479839) 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, 172 + ... + 994.

It is an arithmetic number, because the mean of its divisors is an integer number (66744).

2⁴⁷⁹⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

479809 is a deficient number, since it is larger than the sum of its proper divisors (54143).

479809 is a wasteful number, since it uses less digits than its factorization.

479809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 887.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 479809 is about 692.6824669356. The cubic root of 479809 is about 78.2869661717.

The spelling of 479809 in words is "four hundred seventy-nine thousand, eight hundred nine".