44438993 has 2 divisors, whose sum is σ = 44438994. Its totient is φ = 44438992.

The previous prime is 44438987. The next prime is 44439011. The reversal of 44438993 is 39983444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41383489 + 3055504 = 6433^2 + 1748^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44438993 is a prime.

It is not a weakly prime, because it can be changed into another prime (44438983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22219496 + 22219497.

It is an arithmetic number, because the mean of its divisors is an integer number (22219497).

Almost surely, 2^44438993 is an apocalyptic number.

It is an amenable number.

44438993 is a deficient number, since it is larger than the sum of its proper divisors (1).

44438993 is an equidigital number, since it uses as much as digits as its factorization.

44438993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 44.

The square root of 44438993 is about 6666.2577957952. The cubic root of 44438993 is about 354.2050399083.

The spelling of 44438993 in words is "forty-four million, four hundred thirty-eight thousand, nine hundred ninety-three".