855944880 has 160 divisors (see below), whose sum is σ = 3041186304. Its totient is φ = 195084288.

The previous prime is 855944867. The next prime is 855944893. The reversal of 855944880 is 88449558.

855944880 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (855944867) and next prime (855944893).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 968919 + ... + 969801.

Almost surely, 2^855944880 is an apocalyptic number.

855944880 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 855944880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1520593152).

855944880 is an abundant number, since it is smaller than the sum of its proper divisors (2185241424).

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

855944880 is a wasteful number, since it uses less digits than its factorization.

855944880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1477 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The square root of 855944880 is about 29256.5356800835. The cubic root of 855944880 is about 949.4714992079.

The spelling of 855944880 in words is "eight hundred fifty-five million, nine hundred forty-four thousand, eight hundred eighty".