8441459981 has 4 divisors (see below), whose sum is σ = 8442447552. Its totient is φ = 8440472412.

The previous prime is 8441459963. The next prime is 8441460019. The reversal of 8441459981 is 1899541448.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8441459981 - 2¹⁴ = 8441443597 is a prime.

It is a super-2 number, since 2×8441459981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8441459921) 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 3 ways as a sum of consecutive naturals, for example, 480851 + ... + 498096.

It is an arithmetic number, because the mean of its divisors is an integer number (2110611888).

Almost surely, 2^8441459981 is an apocalyptic number.

It is an amenable number.

8441459981 is a deficient number, since it is larger than the sum of its proper divisors (987571).

8441459981 is an equidigital number, since it uses as much as digits as its factorization.

8441459981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 987570.

The product of its digits is 1658880, while the sum is 53.

The square root of 8441459981 is about 91877.4182321206. The cubic root of 8441459981 is about 2036.1316527723.

The spelling of 8441459981 in words is "eight billion, four hundred forty-one million, four hundred fifty-nine thousand, nine hundred eighty-one".