4128444445 has 4 divisors (see below), whose sum is σ = 4954133340. Its totient is φ = 3302755552.

The previous prime is 4128444403. The next prime is 4128444457. The reversal of 4128444445 is 5444448214.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2177808889 + 1950635556 = 46667^2 + 44166^2 .

It is a cyclic number.

It is not a de Polignac number, because 4128444445 - 2⁹ = 4128443933 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4128444398 and 4128444407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 412844440 + ... + 412844449.

It is an arithmetic number, because the mean of its divisors is an integer number (1238533335).

Almost surely, 2^4128444445 is an apocalyptic number.

It is an amenable number.

4128444445 is a deficient number, since it is larger than the sum of its proper divisors (825688895).

4128444445 is an equidigital number, since it uses as much as digits as its factorization.

4128444445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 825688894.

The product of its digits is 327680, while the sum is 40.

The square root of 4128444445 is about 64252.9722658804. The cubic root of 4128444445 is about 1604.2134317403.

The spelling of 4128444445 in words is "four billion, one hundred twenty-eight million, four hundred forty-four thousand, four hundred forty-five".