4445055439 has 4 divisors (see below), whose sum is σ = 4849151400. Its totient is φ = 4040959480.

The previous prime is 4445055389. The next prime is 4445055443. The reversal of 4445055439 is 9345505444.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4445055439 - 2¹⁵ = 4445022671 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4445055395 and 4445055404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4445055479) 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, 202047964 + ... + 202047985.

It is an arithmetic number, because the mean of its divisors is an integer number (1212287850).

Almost surely, 2^4445055439 is an apocalyptic number.

4445055439 is a deficient number, since it is larger than the sum of its proper divisors (404095961).

4445055439 is a wasteful number, since it uses less digits than its factorization.

4445055439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404095960.

The product of its (nonzero) digits is 864000, while the sum is 43.

The square root of 4445055439 is about 66671.2489683522. The cubic root of 4445055439 is about 1644.2167215422.

It can be divided in two parts, 444505 and 5439, that added together give a palindrome (449944).

The spelling of 4445055439 in words is "four billion, four hundred forty-five million, fifty-five thousand, four hundred thirty-nine".