869049 has 10 divisors (see below), whose sum is σ = 1298330. Its totient is φ = 579312.

The previous prime is 869039. The next prime is 869053. The reversal of 869049 is 940968.

869049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 810000 + 59049 = 900^2 + 243^2 .

It is not a de Polignac number, because 869049 - 2⁵ = 869017 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (869039) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5284 + ... + 5445.

It is an arithmetic number, because the mean of its divisors is an integer number (129833).

2⁸⁶⁹⁰⁴⁹ is an apocalyptic number.

It is an amenable number.

869049 is a deficient number, since it is larger than the sum of its proper divisors (429281).

869049 is a wasteful number, since it uses less digits than its factorization.

869049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10741 (or 10732 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 869049 is about 932.2279764092. The cubic root of 869049 is about 95.4292303927.

The spelling of 869049 in words is "eight hundred sixty-nine thousand, forty-nine".