863041940 has 24 divisors (see below), whose sum is σ = 1907777760. Its totient is φ = 327047328.

The previous prime is 863041939. The next prime is 863041951. The reversal of 863041940 is 49140368.

It is a self number, because there is not a number n which added to its sum of digits gives 863041940.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135202 + ... + 1135961.

It is an arithmetic number, because the mean of its divisors is an integer number (79490740).

Almost surely, 2^863041940 is an apocalyptic number.

It is an amenable number.

863041940 is an abundant number, since it is smaller than the sum of its proper divisors (1044735820).

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

863041940 is a wasteful number, since it uses less digits than its factorization.

863041940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2271191 (or 2271189 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 863041940 is about 29377.5754615659. The cubic root of 863041940 is about 952.0884580493.

The spelling of 863041940 in words is "eight hundred sixty-three million, forty-one thousand, nine hundred forty".