9992944081 has 2 divisors, whose sum is σ = 9992944082. Its totient is φ = 9992944080.

The previous prime is 9992944043. The next prime is 9992944099. The reversal of 9992944081 is 1804492999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6174816400 + 3818127681 = 78580^2 + 61791^2 .

It is a cyclic number.

It is not a de Polignac number, because 9992944081 - 2²³ = 9984555473 is a prime.

It is a super-2 number, since 2×9992944081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9992914081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4996472040 + 4996472041.

It is an arithmetic number, because the mean of its divisors is an integer number (4996472041).

Almost surely, 2^9992944081 is an apocalyptic number.

It is an amenable number.

9992944081 is a deficient number, since it is larger than the sum of its proper divisors (1).

9992944081 is an equidigital number, since it uses as much as digits as its factorization.

9992944081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 55.

The square root of 9992944081 is about 99964.7141795544. The cubic root of 9992944081 is about 2153.9278535845.

The spelling of 9992944081 in words is "nine billion, nine hundred ninety-two million, nine hundred forty-four thousand, eighty-one".