869541 has 4 divisors (see below), whose sum is σ = 1159392. Its totient is φ = 579692.

The previous prime is 869521. The next prime is 869543. The reversal of 869541 is 145968.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 869541 - 2⁷ = 869413 is a prime.

It is a super-2 number, since 2×869541² = 1512203101362, which contains 22 as substring.

It is a D-number.

It is a nialpdrome in base 11.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 869541.

It is not an unprimeable number, because it can be changed into a prime (869543) 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, 144921 + ... + 144926.

It is an arithmetic number, because the mean of its divisors is an integer number (289848).

2⁸⁶⁹⁵⁴¹ is an apocalyptic number.

It is an amenable number.

869541 is a deficient number, since it is larger than the sum of its proper divisors (289851).

869541 is a wasteful number, since it uses less digits than its factorization.

869541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289850.

The product of its digits is 8640, while the sum is 33.

The square root of 869541 is about 932.4918230204. The cubic root of 869541 is about 95.4472356390.

The spelling of 869541 in words is "eight hundred sixty-nine thousand, five hundred forty-one".