863800140 has 48 divisors (see below), whose sum is σ = 2764161792. Its totient is φ = 197439936.

The previous prime is 863800139. The next prime is 863800159. The reversal of 863800140 is 41008368.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 863800098 and 863800107.

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, 1027914 + ... + 1028753.

It is an arithmetic number, because the mean of its divisors is an integer number (57586704).

Almost surely, 2^863800140 is an apocalyptic number.

It is an amenable number.

863800140 is an abundant number, since it is smaller than the sum of its proper divisors (1900361652).

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

863800140 is a wasteful number, since it uses less digits than its factorization.

863800140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056686 (or 2056684 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 863800140 is about 29390.4770291331. The cubic root of 863800140 is about 952.3671861717.

The spelling of 863800140 in words is "eight hundred sixty-three million, eight hundred thousand, one hundred forty".