4426975981 has 4 divisors (see below), whose sum is σ = 4438127452. Its totient is φ = 4415824512.

The previous prime is 4426975937. The next prime is 4426975999. The reversal of 4426975981 is 1895796244.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1915462756 + 2511513225 = 43766^2 + 50115^2 .

It is a cyclic number.

It is not a de Polignac number, because 4426975981 - 2¹¹ = 4426973933 is a prime.

It is a super-2 number, since 2×4426975981² = 39196232672701824722, which 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 (4426975921) 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, 5575140 + ... + 5575933.

It is an arithmetic number, because the mean of its divisors is an integer number (1109531863).

Almost surely, 2^4426975981 is an apocalyptic number.

It is an amenable number.

4426975981 is a deficient number, since it is larger than the sum of its proper divisors (11151471).

4426975981 is a wasteful number, since it uses less digits than its factorization.

4426975981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11151470.

The product of its digits is 4354560, while the sum is 55.

The square root of 4426975981 is about 66535.5242032405. The cubic root of 4426975981 is about 1641.9845078437.

The spelling of 4426975981 in words is "four billion, four hundred twenty-six million, nine hundred seventy-five thousand, nine hundred eighty-one".