4447845138 has 32 divisors (see below), whose sum is σ = 9711277632. Its totient is φ = 1346875200.

The previous prime is 4447845079. The next prime is 4447845161. The reversal of 4447845138 is 8315487444.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 72708 + ... + 119088.

It is an arithmetic number, because the mean of its divisors is an integer number (303477426).

Almost surely, 2^4447845138 is an apocalyptic number.

4447845138 is an abundant number, since it is smaller than the sum of its proper divisors (5263432494).

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

4447845138 is a wasteful number, since it uses less digits than its factorization.

4447845138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47850.

The product of its digits is 1720320, while the sum is 48.

The square root of 4447845138 is about 66692.1669913341. The cubic root of 4447845138 is about 1644.5606175539.

The spelling of 4447845138 in words is "four billion, four hundred forty-seven million, eight hundred forty-five thousand, one hundred thirty-eight".