809347 has 16 divisors (see below), whose sum is σ = 1055232. Its totient is φ = 601920.

The previous prime is 809339. The next prime is 809357. The reversal of 809347 is 743908.

It is a happy number.

It is not a de Polignac number, because 809347 - 2³ = 809339 is a prime.

It is a Duffinian number.

809347 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (809357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1543 + ... + 1999.

It is an arithmetic number, because the mean of its divisors is an integer number (65952).

2⁸⁰⁹³⁴⁷ is an apocalyptic number.

809347 is a deficient number, since it is larger than the sum of its proper divisors (245885).

809347 is a wasteful number, since it uses less digits than its factorization.

809347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 809347 is about 899.6371490773. The cubic root of 809347 is about 93.1919187796.

It can be divided in two parts, 809 and 347, that added together give a square (1156 = 34²).

The spelling of 809347 in words is "eight hundred nine thousand, three hundred forty-seven".