869123400 has 96 divisors (see below), whose sum is σ = 2731328160. Its totient is φ = 228579840.

The previous prime is 869123363. The next prime is 869123401. The reversal of 869123400 is 4321968.

869123400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (869123401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33879 + ... + 53721.

It is an arithmetic number, because the mean of its divisors is an integer number (28451335).

Almost surely, 2^869123400 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869123400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1365664080).

869123400 is an abundant number, since it is smaller than the sum of its proper divisors (1862204760).

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

869123400 is a wasteful number, since it uses less digits than its factorization.

869123400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19935 (or 19926 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 869123400 is about 29480.8989008137. The cubic root of 869123400 is about 954.3195357326.

The spelling of 869123400 in words is "eight hundred sixty-nine million, one hundred twenty-three thousand, four hundred".