9444385491 has 16 divisors (see below), whose sum is σ = 12770352000. Its totient is φ = 6207649280.

The previous prime is 9444385481. The next prime is 9444385519. The reversal of 9444385491 is 1945834449.

9444385491 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 9444385491 - 2¹⁷ = 9444254419 is a prime.

It is a super-2 number, since 2×9444385491² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9444385421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83635 + ... + 160883.

It is an arithmetic number, because the mean of its divisors is an integer number (798147000).

Almost surely, 2^9444385491 is an apocalyptic number.

9444385491 is a deficient number, since it is larger than the sum of its proper divisors (3325966509).

9444385491 is a wasteful number, since it uses less digits than its factorization.

9444385491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77826.

The product of its digits is 2488320, while the sum is 51.

The square root of 9444385491 is about 97182.2282673123. The cubic root of 9444385491 is about 2113.7708369663.

The spelling of 9444385491 in words is "nine billion, four hundred forty-four million, three hundred eighty-five thousand, four hundred ninety-one".