4000009986 has 64 divisors (see below), whose sum is σ = 10433352960. Its totient is φ = 1111968000.

The previous prime is 4000009973. The next prime is 4000010009. The reversal of 4000009986 is 6899000004.

It is a self number, because there is not a number n which added to its sum of digits gives 4000009986.

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 31 ways as a sum of consecutive naturals, for example, 129015 + ... + 156986.

It is an arithmetic number, because the mean of its divisors is an integer number (163021140).

Almost surely, 2^4000009986 is an apocalyptic number.

4000009986 is an abundant number, since it is smaller than the sum of its proper divisors (6433342974).

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

4000009986 is a wasteful number, since it uses less digits than its factorization.

4000009986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286056 (or 286050 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 4000009986 is about 63245.6321495801. The cubic root of 4000009986 is about 1587.4023729493.

The spelling of 4000009986 in words is "four billion, nine thousand, nine hundred eighty-six".