869055869 has 4 divisors (see below), whose sum is σ = 948060960. Its totient is φ = 790050780.

The previous prime is 869055821. The next prime is 869055917. The reversal of 869055869 is 968550968.

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 an interprime number because it is at equal distance from previous prime (869055821) and next prime (869055917).

It is a cyclic number.

It is not a de Polignac number, because 869055869 - 2²⁰ = 868007293 is a prime.

It is a super-2 number, since 2×869055869² = 1510516206886690322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869055569) 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, 39502529 + ... + 39502550.

It is an arithmetic number, because the mean of its divisors is an integer number (237015240).

Almost surely, 2^869055869 is an apocalyptic number.

It is an amenable number.

869055869 is a deficient number, since it is larger than the sum of its proper divisors (79005091).

869055869 is a wasteful number, since it uses less digits than its factorization.

869055869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79005090.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The square root of 869055869 is about 29479.7535437459. The cubic root of 869055869 is about 954.2948181755.

The spelling of 869055869 in words is "eight hundred sixty-nine million, fifty-five thousand, eight hundred sixty-nine".