867999140 has 48 divisors (see below), whose sum is σ = 1857873024. Its totient is φ = 340569600.

The previous prime is 867999131. The next prime is 867999157. The reversal of 867999140 is 41999768.

It is a happy number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 298172 + ... + 301068.

It is an arithmetic number, because the mean of its divisors is an integer number (38705688).

Almost surely, 2^867999140 is an apocalyptic number.

It is an amenable number.

867999140 is an abundant number, since it is smaller than the sum of its proper divisors (989873884).

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

867999140 is a wasteful number, since it uses less digits than its factorization.

867999140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3188 (or 3186 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 867999140 is about 29461.8251301578. The cubic root of 867999140 is about 953.9078695126.

The spelling of 867999140 in words is "eight hundred sixty-seven million, nine hundred ninety-nine thousand, one hundred forty".