863480844 has 48 divisors (see below), whose sum is σ = 2242326240. Its totient is φ = 287354880.

The previous prime is 863480831. The next prime is 863480857. The reversal of 863480844 is 448084368.

863480844 is a `hidden beast` number, since 8 + 634 + 8 + 0 + 8 + 4 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (863480831) and next prime (863480857).

It is a self number, because there is not a number n which added to its sum of digits gives 863480844.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62992 + ... + 75464.

It is an arithmetic number, because the mean of its divisors is an integer number (46715130).

Almost surely, 2^863480844 is an apocalyptic number.

It is an amenable number.

863480844 is an abundant number, since it is smaller than the sum of its proper divisors (1378845396).

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

863480844 is a wasteful number, since it uses less digits than its factorization.

863480844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13127 (or 13119 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 45.

The square root of 863480844 is about 29385.0445635190. The cubic root of 863480844 is about 952.2498270379.

The spelling of 863480844 in words is "eight hundred sixty-three million, four hundred eighty thousand, eight hundred forty-four".