944384447869 has 4 divisors (see below), whose sum is σ = 976949428860. Its totient is φ = 911819466880.

The previous prime is 944384447821. The next prime is 944384448011. The reversal of 944384447869 is 968744483449.

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 778564463769 + 165819984100 = 882363^2 + 407210^2 .

It is a cyclic number.

It is not a de Polignac number, because 944384447869 - 2³⁹ = 394628633981 is a prime.

It is a super-2 number, since 2×944384447869² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 944384447798 and 944384447807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (944384447569) 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, 16282490452 + ... + 16282490509.

It is an arithmetic number, because the mean of its divisors is an integer number (244237357215).

Almost surely, 2^944384447869 is an apocalyptic number.

It is an amenable number.

944384447869 is a deficient number, since it is larger than the sum of its proper divisors (32564980991).

944384447869 is a wasteful number, since it uses less digits than its factorization.

944384447869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32564980990.

The product of its digits is 668860416, while the sum is 70.

The spelling of 944384447869 in words is "nine hundred forty-four billion, three hundred eighty-four million, four hundred forty-seven thousand, eight hundred sixty-nine".