869047 has 4 divisors (see below), whose sum is σ = 871720. Its totient is φ = 866376.

The previous prime is 869039. The next prime is 869053. The reversal of 869047 is 740968.

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

It is a cyclic number.

It is not a de Polignac number, because 869047 - 2³ = 869039 is a prime.

It is a Duffinian number.

869047 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869017) 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, 768 + ... + 1525.

It is an arithmetic number, because the mean of its divisors is an integer number (217930).

2⁸⁶⁹⁰⁴⁷ is an apocalyptic number.

869047 is a deficient number, since it is larger than the sum of its proper divisors (2673).

869047 is a wasteful number, since it uses less digits than its factorization.

869047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2672.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 869047 is about 932.2269037096. The cubic root of 869047 is about 95.4291571867.

The spelling of 869047 in words is "eight hundred sixty-nine thousand, forty-seven".