869919349 has 4 divisors (see below), whose sum is σ = 936836236. Its totient is φ = 803002464.

The previous prime is 869919343. The next prime is 869919361. The reversal of 869919349 is 943919968.

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 111302500 + 758616849 = 10550^2 + 27543^2 .

It is a cyclic number.

It is not a de Polignac number, because 869919349 - 2⁷ = 869919221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 869919293 and 869919302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869919343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33458424 + ... + 33458449.

It is an arithmetic number, because the mean of its divisors is an integer number (234209059).

Almost surely, 2^869919349 is an apocalyptic number.

It is an amenable number.

869919349 is a deficient number, since it is larger than the sum of its proper divisors (66916887).

869919349 is a wasteful number, since it uses less digits than its factorization.

869919349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66916886.

The product of its digits is 3779136, while the sum is 58.

The square root of 869919349 is about 29494.3952133282. The cubic root of 869919349 is about 954.6107709085.

The spelling of 869919349 in words is "eight hundred sixty-nine million, nine hundred nineteen thousand, three hundred forty-nine".