4440865986 has 40 divisors (see below), whose sum is σ = 9988761024. Its totient is φ = 1474646040.

The previous prime is 4440865981. The next prime is 4440866009. The reversal of 4440865986 is 6895680444.

4440865986 is a `hidden beast` number, since 4 + 4 + 40 + 8 + 6 + 598 + 6 = 666.

It is a super-2 number, since 2×4440865986² = 39442581411223504392, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (4440865981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 9510 + ... + 94721.

Almost surely, 2^4440865986 is an apocalyptic number.

4440865986 is an abundant number, since it is smaller than the sum of its proper divisors (5547895038).

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

4440865986 is a wasteful number, since it uses less digits than its factorization.

4440865986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104508 (or 104499 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 54.

The square root of 4440865986 is about 66639.8228238941. The cubic root of 4440865986 is about 1643.7000025350.

The spelling of 4440865986 in words is "four billion, four hundred forty million, eight hundred sixty-five thousand, nine hundred eighty-six".