7199444889 has 64 divisors (see below), whose sum is σ = 13698048000. Its totient is φ = 3632371776.

The previous prime is 7199444873. The next prime is 7199444947. The reversal of 7199444889 is 9884449917.

It is a happy number.

It is not a de Polignac number, because 7199444889 - 2⁴ = 7199444873 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (7199444789) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7189 + ... + 120210.

It is an arithmetic number, because the mean of its divisors is an integer number (214032000).

Almost surely, 2^7199444889 is an apocalyptic number.

It is an amenable number.

7199444889 is a deficient number, since it is larger than the sum of its proper divisors (6498603111).

7199444889 is a wasteful number, since it uses less digits than its factorization.

7199444889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127451 (or 127445 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 7199444889 is about 84849.5426563986. The cubic root of 7199444889 is about 1930.9291425861.

The spelling of 7199444889 in words is "seven billion, one hundred ninety-nine million, four hundred forty-four thousand, eight hundred eighty-nine".