863366988 has 96 divisors (see below), whose sum is σ = 2292111360. Its totient is φ = 250560000.

The previous prime is 863366969. The next prime is 863366989. The reversal of 863366988 is 889663368.

It is not an unprimeable number, because it can be changed into a prime (863366989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412248 + ... + 414336.

It is an arithmetic number, because the mean of its divisors is an integer number (23876160).

Almost surely, 2^863366988 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 863366988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146055680).

863366988 is an abundant number, since it is smaller than the sum of its proper divisors (1428744372).

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

863366988 is a wasteful number, since it uses less digits than its factorization.

863366988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239 (or 2237 counting only the distinct ones).

The product of its digits is 8957952, while the sum is 57.

The square root of 863366988 is about 29383.1071876342. The cubic root of 863366988 is about 952.2079715941.

The spelling of 863366988 in words is "eight hundred sixty-three million, three hundred sixty-six thousand, nine hundred eighty-eight".