809029 has 4 divisors (see below), whose sum is σ = 871276. Its totient is φ = 746784.

The previous prime is 809023. The next prime is 809041. The reversal of 809029 is 920908.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 476100 + 332929 = 690^2 + 577^2 .

It is a cyclic number.

It is not a de Polignac number, because 809029 - 2⁹ = 808517 is a prime.

It is a Duffinian number.

809029 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 808988 and 809006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (809023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31104 + ... + 31129.

It is an arithmetic number, because the mean of its divisors is an integer number (217819).

2⁸⁰⁹⁰²⁹ is an apocalyptic number.

It is an amenable number.

809029 is a deficient number, since it is larger than the sum of its proper divisors (62247).

809029 is a wasteful number, since it uses less digits than its factorization.

809029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62246.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 809029 is about 899.4603937917. The cubic root of 809029 is about 93.1797118555.

The spelling of 809029 in words is "eight hundred nine thousand, twenty-nine".