869538141 has 12 divisors (see below), whose sum is σ = 1256345532. Its totient is φ = 579532416.

The previous prime is 869538133. The next prime is 869538143. The reversal of 869538141 is 141835968.

It can be written as a sum of positive squares in 2 ways, for example, as 301716900 + 567821241 = 17370^2 + 23829^2 .

It is not a de Polignac number, because 869538141 - 2³ = 869538133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869538143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27895 + ... + 50171.

It is an arithmetic number, because the mean of its divisors is an integer number (104695461).

Almost surely, 2^869538141 is an apocalyptic number.

It is an amenable number.

869538141 is a deficient number, since it is larger than the sum of its proper divisors (386807391).

869538141 is a wasteful number, since it uses less digits than its factorization.

869538141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26620 (or 26617 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 869538141 is about 29487.9321248541. The cubic root of 869538141 is about 954.4713103053.

The spelling of 869538141 in words is "eight hundred sixty-nine million, five hundred thirty-eight thousand, one hundred forty-one".