4449393319689 has 24 divisors (see below), whose sum is σ = 6443969054952. Its totient is φ = 2958395166720.

The previous prime is 4449393319601. The next prime is 4449393319739. The reversal of 4449393319689 is 9869133939444.

4449393319689 is a `hidden beast` number, since 4 + 4 + 49 + 393 + 3 + 196 + 8 + 9 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 158032486089 + 4291360833600 = 397533^2 + 2071560^2 .

It is not a de Polignac number, because 4449393319689 - 2¹⁶ = 4449393254153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4449393319289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4762269 + ... + 5619429.

It is an arithmetic number, because the mean of its divisors is an integer number (268498710623).

Almost surely, 2^{4449393319689} is an apocalyptic number.

It is an amenable number.

4449393319689 is a deficient number, since it is larger than the sum of its proper divisors (1994575735263).

4449393319689 is a wasteful number, since it uses less digits than its factorization.

4449393319689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858697 (or 858694 counting only the distinct ones).

The product of its digits is 544195584, while the sum is 72.

The spelling of 4449393319689 in words is "four trillion, four hundred forty-nine billion, three hundred ninety-three million, three hundred nineteen thousand, six hundred eighty-nine".