863980992 has 280 divisors, whose sum is σ = 3031601760. Its totient is φ = 238049280.

The previous prime is 863980991. The next prime is 863981029. The reversal of 863980992 is 299089368.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (863980991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1051942 + ... + 1052762.

Almost surely, 2^863980992 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 863980992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1515800880).

863980992 is an abundant number, since it is smaller than the sum of its proper divisors (2167620768).

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

863980992 is a wasteful number, since it uses less digits than its factorization.

863980992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The square root of 863980992 is about 29393.5535789737. The cubic root of 863980992 is about 952.4336465651.

The spelling of 863980992 in words is "eight hundred sixty-three million, nine hundred eighty thousand, nine hundred ninety-two".