809122 has 8 divisors (see below), whose sum is σ = 1222956. Its totient is φ = 401472.

The previous prime is 809101. The next prime is 809141. The reversal of 809122 is 221908.

It can be written as a sum of positive squares in 2 ways, for example, as 772641 + 36481 = 879^2 + 191^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 809093 and 809102.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1203 + ... + 1750.

2⁸⁰⁹¹²² is an apocalyptic number.

809122 is a deficient number, since it is larger than the sum of its proper divisors (413834).

809122 is a wasteful number, since it uses less digits than its factorization.

809122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3092.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 809122 is about 899.5120899688. The cubic root of 809122 is about 93.1832821359.

The spelling of 809122 in words is "eight hundred nine thousand, one hundred twenty-two".