44011993 has 2 divisors, whose sum is σ = 44011994. Its totient is φ = 44011992.

The previous prime is 44011991. The next prime is 44012009. The reversal of 44011993 is 39911044.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43917129 + 94864 = 6627^2 + 308^2 .

It is a cyclic number.

It is not a de Polignac number, because 44011993 - 2¹ = 44011991 is a prime.

Together with 44011991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (44011991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22005996 + 22005997.

It is an arithmetic number, because the mean of its divisors is an integer number (22005997).

Almost surely, 2^44011993 is an apocalyptic number.

It is an amenable number.

44011993 is a deficient number, since it is larger than the sum of its proper divisors (1).

44011993 is an equidigital number, since it uses as much as digits as its factorization.

44011993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 44011993 is about 6634.1535255072. The cubic root of 44011993 is about 353.0669059730.

The spelling of 44011993 in words is "forty-four million, eleven thousand, nine hundred ninety-three".