809388 has 18 divisors (see below), whose sum is σ = 2046044. Its totient is φ = 269784.

The previous prime is 809383. The next prime is 809399. The reversal of 809388 is 883908.

809388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 22483 = 809388 / (8 + 0 + 9 + 3 + 8 + 8).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 809388.

It is not an unprimeable number, because it can be changed into a prime (809383) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11206 + ... + 11277.

2⁸⁰⁹³⁸⁸ is an apocalyptic number.

It is an amenable number.

809388 is an abundant number, since it is smaller than the sum of its proper divisors (1236656).

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

809388 is a wasteful number, since it uses less digits than its factorization.

809388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22493 (or 22488 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 809388 is about 899.6599357535. The cubic root of 809388 is about 93.1934923956.

The spelling of 809388 in words is "eight hundred nine thousand, three hundred eighty-eight".