4000342986 has 48 divisors (see below), whose sum is σ = 9001816200. Its totient is φ = 1282811904.

The previous prime is 4000342979. The next prime is 4000342993. The reversal of 4000342986 is 6892430004.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4000342979) and next prime (4000342993).

It can be written as a sum of positive squares in 4 ways, for example, as 2428616961 + 1571726025 = 49281^2 + 39645^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 4000342986.

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 23 ways as a sum of consecutive naturals, for example, 25530 + ... + 93018.

Almost surely, 2^4000342986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4000342986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4500908100).

4000342986 is an abundant number, since it is smaller than the sum of its proper divisors (5001473214).

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

4000342986 is a wasteful number, since it uses less digits than its factorization.

4000342986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67623 (or 67620 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 4000342986 is about 63248.2646876576. The cubic root of 4000342986 is about 1587.4464220329.

The spelling of 4000342986 in words is "four billion, three hundred forty-two thousand, nine hundred eighty-six".