4440642536 has 16 divisors (see below), whose sum is σ = 9083132640. Its totient is φ = 2018473840.

The previous prime is 4440642533. The next prime is 4440642541. The reversal of 4440642536 is 6352460444.

It is a super-2 number, since 2×4440642536² = 39438612265065022592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4440642536.

It is not an unprimeable number, because it can be changed into a prime (4440642533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25230836 + ... + 25231011.

It is an arithmetic number, because the mean of its divisors is an integer number (567695790).

Almost surely, 2^4440642536 is an apocalyptic number.

It is an amenable number.

4440642536 is an abundant number, since it is smaller than the sum of its proper divisors (4642490104).

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

4440642536 is a wasteful number, since it uses less digits than its factorization.

4440642536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50461864 (or 50461860 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 38.

The square root of 4440642536 is about 66638.1462527282. The cubic root of 4440642536 is about 1643.6724335183.

The spelling of 4440642536 in words is "four billion, four hundred forty million, six hundred forty-two thousand, five hundred thirty-six".