476809 has 4 divisors (see below), whose sum is σ = 480004. Its totient is φ = 473616.

The previous prime is 476803. The next prime is 476831. The reversal of 476809 is 908674.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 278784 + 198025 = 528^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 476809 - 2⁷ = 476681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (476803) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1362 + ... + 1675.

It is an arithmetic number, because the mean of its divisors is an integer number (120001).

2⁴⁷⁶⁸⁰⁹ is an apocalyptic number.

It is an amenable number.

476809 is a deficient number, since it is larger than the sum of its proper divisors (3195).

476809 is a wasteful number, since it uses less digits than its factorization.

476809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3194.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 476809 is about 690.5135769846. The cubic root of 476809 is about 78.1234621564.

It can be divided in two parts, 47 and 6809, that multiplied together give a palindrome (320023).

The spelling of 476809 in words is "four hundred seventy-six thousand, eight hundred nine".