9444612021 has 64 divisors (see below), whose sum is σ = 14552068608. Its totient is φ = 5397331968.

The previous prime is 9444612019. The next prime is 9444612041. The reversal of 9444612021 is 1202164449.

It is not a de Polignac number, because 9444612021 - 2¹ = 9444612019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9444612041) 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 63 ways as a sum of consecutive naturals, for example, 21811821 + ... + 21812253.

It is an arithmetic number, because the mean of its divisors is an integer number (227376072).

Almost surely, 2^9444612021 is an apocalyptic number.

It is an amenable number.

9444612021 is a deficient number, since it is larger than the sum of its proper divisors (5107456587).

9444612021 is a wasteful number, since it uses less digits than its factorization.

9444612021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 9444612021 is about 97183.3937511960. The cubic root of 9444612021 is about 2113.7877369076.

The spelling of 9444612021 in words is "nine billion, four hundred forty-four million, six hundred twelve thousand, twenty-one".