89444144399 has 4 divisors (see below), whose sum is σ = 89680145160. Its totient is φ = 89208143640.

The previous prime is 89444144299. The next prime is 89444144407. The reversal of 89444144399 is 99344144498.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 89444144399 - 2¹⁶ = 89444078863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89444144299) 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, 117999812 + ... + 118000569.

It is an arithmetic number, because the mean of its divisors is an integer number (22420036290).

Almost surely, 2^89444144399 is an apocalyptic number.

89444144399 is a deficient number, since it is larger than the sum of its proper divisors (236000761).

89444144399 is a wasteful number, since it uses less digits than its factorization.

89444144399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236000760.

The product of its digits is 17915904, while the sum is 59.

Subtracting 89444144399 from its reverse (99344144498), we obtain a palindrome (9900000099).

The spelling of 89444144399 in words is "eighty-nine billion, four hundred forty-four million, one hundred forty-four thousand, three hundred ninety-nine".