44081993 has 2 divisors, whose sum is σ = 44081994. Its totient is φ = 44081992.

The previous prime is 44081987. The next prime is 44082013. The reversal of 44081993 is 39918044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27541504 + 16540489 = 5248^2 + 4067^2 .

It is a cyclic number.

It is not a de Polignac number, because 44081993 - 2⁴ = 44081977 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44081293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22040996 + 22040997.

It is an arithmetic number, because the mean of its divisors is an integer number (22040997).

Almost surely, 2^44081993 is an apocalyptic number.

It is an amenable number.

44081993 is a deficient number, since it is larger than the sum of its proper divisors (1).

44081993 is an equidigital number, since it uses as much as digits as its factorization.

44081993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 44081993 is about 6639.4271590251. The cubic root of 44081993 is about 353.2539882552.

The spelling of 44081993 in words is "forty-four million, eighty-one thousand, nine hundred ninety-three".