4444444445 has 64 divisors (see below), whose sum is σ = 6689571840. Its totient is φ = 2767564800.

The previous prime is 4444444429. The next prime is 4444444447. The reversal of 4444444445 is 5444444444.

It is not a de Polignac number, because 4444444445 - 2⁴ = 4444444429 is a prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444444447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1422485 + ... + 1425605.

It is an arithmetic number, because the mean of its divisors is an integer number (104524560).

Almost surely, 2^4444444445 is an apocalyptic number.

It is an amenable number.

4444444445 is a deficient number, since it is larger than the sum of its proper divisors (2245127395).

4444444445 is a wasteful number, since it uses less digits than its factorization.

4444444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246.

The product of its digits is 1310720, while the sum is 41.

The square root of 4444444445 is about 66666.6666708333. Note that the first 4 decimals coincide. The cubic root of 4444444445 is about 1644.1413829555.

Adding to 4444444445 its reverse (5444444444), we get a palindrome (9888888889).

Subtracting 4444444445 from its reverse (5444444444), we obtain a palindrome (999999999).

The spelling of 4444444445 in words is "four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-five".