4442889389 has 4 divisors (see below), whose sum is σ = 4448637756. Its totient is φ = 4437141024.

The previous prime is 4442889383. The next prime is 4442889401. The reversal of 4442889389 is 9839882444.

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 1759131364 + 2683758025 = 41942^2 + 51805^2 .

It is a cyclic number.

It is not a de Polignac number, because 4442889389 - 2²⁰ = 4441840813 is a prime.

It is a super-2 number, since 2×4442889389² = 39478532245777586642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4442889383) 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, 2873024 + ... + 2874569.

It is an arithmetic number, because the mean of its divisors is an integer number (1112159439).

Almost surely, 2^4442889389 is an apocalyptic number.

It is an amenable number.

4442889389 is a deficient number, since it is larger than the sum of its proper divisors (5748367).

4442889389 is an equidigital number, since it uses as much as digits as its factorization.

4442889389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5748366.

The product of its digits is 15925248, while the sum is 59.

The square root of 4442889389 is about 66655.0027304778. The cubic root of 4442889389 is about 1643.9496056928.

The spelling of 4442889389 in words is "four billion, four hundred forty-two million, eight hundred eighty-nine thousand, three hundred eighty-nine".