896809 has 3 divisors (see below), whose sum is σ = 897757. Its totient is φ = 895862.

The previous prime is 896803. The next prime is 896837. The reversal of 896809 is 908698.

It is a happy number.

The square root of 896809 is 947.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 896809 - 2⁷ = 896681 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (896803) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 474 + ... + 1420.

2⁸⁹⁶⁸⁰⁹ is an apocalyptic number.

896809 is the 947-th square number.

896809 is the 474-th centered octagonal number.

It is an amenable number.

896809 is a deficient number, since it is larger than the sum of its proper divisors (948).

896809 is an frugal number, since it uses more digits than its factorization.

896809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The cubic root of 896809 is about 96.4346967956.

The spelling of 896809 in words is "eight hundred ninety-six thousand, eight hundred nine".