441449949889 has 9 divisors (see below), whose sum is σ = 478029121353. Its totient is φ = 407484288432.

The previous prime is 441449949841. The next prime is 441449949917. The reversal of 441449949889 is 988949944144.

The square root of 441449949889 is 664417.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 17398929025 + 424051020864 = 131905^2 + 651192^2 .

It is not a de Polignac number, because 441449949889 - 2⁷ = 441449949761 is a prime.

It is a super-2 number, since 2×441449949889² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (441449949389) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8611867 + ... + 8662975.

It is an arithmetic number, because the mean of its divisors is an integer number (53114346817).

Almost surely, 2^441449949889 is an apocalyptic number.

441449949889 is the 664417-th square number.

441449949889 is the 332209-th centered octagonal number.

It is an amenable number.

441449949889 is a deficient number, since it is larger than the sum of its proper divisors (36579171464).

441449949889 is an frugal number, since it uses more digits than its factorization.

441449949889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102244 (or 51122 counting only the distinct ones).

The product of its digits is 429981696, while the sum is 73.

The spelling of 441449949889 in words is "four hundred forty-one billion, four hundred forty-nine million, nine hundred forty-nine thousand, eight hundred eighty-nine".