869530 has 16 divisors (see below), whose sum is σ = 1584360. Its totient is φ = 343552.

The previous prime is 869521. The next prime is 869543. The reversal of 869530 is 35968.

It can be written as a sum of positive squares in 4 ways, for example, as 758641 + 110889 = 871^2 + 333^2 .

It is an Ulam number.

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 869492 and 869501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402 + ... + 1378.

2⁸⁶⁹⁵³⁰ is an apocalyptic number.

869530 is a deficient number, since it is larger than the sum of its proper divisors (714830).

869530 is a wasteful number, since it uses less digits than its factorization.

869530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073.

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

The square root of 869530 is about 932.4859248268. The cubic root of 869530 is about 95.4468331569.

The spelling of 869530 in words is "eight hundred sixty-nine thousand, five hundred thirty".