809316 has 18 divisors (see below), whose sum is σ = 2045862. Its totient is φ = 269760.

The previous prime is 809309. The next prime is 809323. The reversal of 809316 is 613908.

It is an interprime number because it is at equal distance from previous prime (809309) and next prime (809323).

It can be written as a sum of positive squares in only one way, i.e., 484416 + 324900 = 696^2 + 570^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 809316.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11205 + ... + 11276.

It is an arithmetic number, because the mean of its divisors is an integer number (113659).

2⁸⁰⁹³¹⁶ is an apocalyptic number.

It is an amenable number.

809316 is an abundant number, since it is smaller than the sum of its proper divisors (1236546).

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

809316 is a wasteful number, since it uses less digits than its factorization.

809316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22491 (or 22486 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 809316 is about 899.6199197439. The cubic root of 809316 is about 93.1907289371.

The spelling of 809316 in words is "eight hundred nine thousand, three hundred sixteen".