4449693289 has 4 divisors (see below), whose sum is σ = 4450235860. Its totient is φ = 4449150720.

The previous prime is 4449693257. The next prime is 4449693293. The reversal of 4449693289 is 9823969444.

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 2288187225 + 2161506064 = 47835^2 + 46492^2 .

It is a cyclic number.

It is not a de Polignac number, because 4449693289 - 2⁵ = 4449693257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4449693299) 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, 258792 + ... + 275449.

It is an arithmetic number, because the mean of its divisors is an integer number (1112558965).

Almost surely, 2^4449693289 is an apocalyptic number.

It is an amenable number.

4449693289 is a deficient number, since it is larger than the sum of its proper divisors (542571).

4449693289 is an equidigital number, since it uses as much as digits as its factorization.

4449693289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542570.

The product of its digits is 13436928, while the sum is 58.

The square root of 4449693289 is about 66706.0213848795. The cubic root of 4449693289 is about 1644.7883664510.

The spelling of 4449693289 in words is "four billion, four hundred forty-nine million, six hundred ninety-three thousand, two hundred eighty-nine".