869305 has 4 divisors (see below), whose sum is σ = 1043172. Its totient is φ = 695440.

The previous prime is 869303. The next prime is 869317. The reversal of 869305 is 503968.

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 514089 + 355216 = 717^2 + 596^2 .

It is not a de Polignac number, because 869305 - 2¹ = 869303 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

869305 is a lucky number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (869303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86926 + ... + 86935.

It is an arithmetic number, because the mean of its divisors is an integer number (260793).

2⁸⁶⁹³⁰⁵ is an apocalyptic number.

It is an amenable number.

869305 is a deficient number, since it is larger than the sum of its proper divisors (173867).

869305 is a wasteful number, since it uses less digits than its factorization.

869305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173866.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 869305 is about 932.3652717685. The cubic root of 869305 is about 95.4385998239.

The spelling of 869305 in words is "eight hundred sixty-nine thousand, three hundred five".