4385444665 has 32 divisors (see below), whose sum is σ = 6206264064. Its totient is φ = 2912271360.

The previous prime is 4385444653. The next prime is 4385444669. The reversal of 4385444665 is 5664445834.

It is not a de Polignac number, because 4385444665 - 2⁷ = 4385444537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4385444669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 185442 + ... + 207748.

It is an arithmetic number, because the mean of its divisors is an integer number (193945752).

Almost surely, 2^4385444665 is an apocalyptic number.

It is an amenable number.

4385444665 is a deficient number, since it is larger than the sum of its proper divisors (1820819399).

4385444665 is a wasteful number, since it uses less digits than its factorization.

4385444665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22497.

The product of its digits is 5529600, while the sum is 49.

The square root of 4385444665 is about 66222.6899559358. The cubic root of 4385444665 is about 1636.8336518445.

The spelling of 4385444665 in words is "four billion, three hundred eighty-five million, four hundred forty-four thousand, six hundred sixty-five".