869439755 has 8 divisors (see below), whose sum is σ = 1104700032. Its totient is φ = 654636928.

The previous prime is 869439751. The next prime is 869439757. The reversal of 869439755 is 557934968.

It is a happy number.

869439755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 869439755 - 2² = 869439751 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 869439755.

It is not an unprimeable number, because it can be changed into a prime (869439751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5114267 + ... + 5114436.

It is an arithmetic number, because the mean of its divisors is an integer number (138087504).

Almost surely, 2^869439755 is an apocalyptic number.

869439755 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

869439755 is a deficient number, since it is larger than the sum of its proper divisors (235260277).

869439755 is a wasteful number, since it uses less digits than its factorization.

869439755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10228725.

The product of its digits is 8164800, while the sum is 56.

The square root of 869439755 is about 29486.2638358948. The cubic root of 869439755 is about 954.4353102911.

The spelling of 869439755 in words is "eight hundred sixty-nine million, four hundred thirty-nine thousand, seven hundred fifty-five".