802289 has 4 divisors (see below), whose sum is σ = 805860. Its totient is φ = 798720.

The previous prime is 802283. The next prime is 802297. The reversal of 802289 is 982208.

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 462400 + 339889 = 680^2 + 583^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802289 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 8³ + 0 + 2¹² + 2¹⁸ + 8⁴ + 9⁶ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (802283) 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, 1424 + ... + 1905.

It is an arithmetic number, because the mean of its divisors is an integer number (201465).

2⁸⁰²²⁸⁹ is an apocalyptic number.

It is an amenable number.

802289 is a deficient number, since it is larger than the sum of its proper divisors (3571).

802289 is a wasteful number, since it uses less digits than its factorization.

802289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3570.

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 802289 is about 895.7058669005. The cubic root of 802289 is about 92.9202306698.

The spelling of 802289 in words is "eight hundred two thousand, two hundred eighty-nine".