869944320 has 704 divisors, whose sum is σ = 3773030400. Its totient is φ = 185794560.

The previous prime is 869944319. The next prime is 869944337. The reversal of 869944320 is 23449968.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28062705 + ... + 28062735.

Almost surely, 2^869944320 is an apocalyptic number.

869944320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 869944320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1886515200).

869944320 is an abundant number, since it is smaller than the sum of its proper divisors (2903086080).

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

869944320 is a wasteful number, since it uses less digits than its factorization.

869944320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 869944320 is about 29494.8185280059. The cubic root of 869944320 is about 954.6199048424.

The spelling of 869944320 in words is "eight hundred sixty-nine million, nine hundred forty-four thousand, three hundred twenty".