869438934 has 112 divisors (see below), whose sum is σ = 2406943392. Its totient is φ = 229267584.

The previous prime is 869438923. The next prime is 869438951. The reversal of 869438934 is 439834968.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 129402 + ... + 135954.

It is an arithmetic number, because the mean of its divisors is an integer number (21490566).

Almost surely, 2^869438934 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869438934, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1203471696).

869438934 is an abundant number, since it is smaller than the sum of its proper divisors (1537504458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

869438934 is a wasteful number, since it uses less digits than its factorization.

869438934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6593 (or 6578 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 869438934 is about 29486.2499141549. The cubic root of 869438934 is about 954.4350098710.

The spelling of 869438934 in words is "eight hundred sixty-nine million, four hundred thirty-eight thousand, nine hundred thirty-four".