44537993 has 2 divisors, whose sum is σ = 44537994. Its totient is φ = 44537992.

The previous prime is 44537989. The next prime is 44538017. The reversal of 44537993 is 39973544.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41822089 + 2715904 = 6467^2 + 1648^2 .

It is a cyclic number.

It is not a de Polignac number, because 44537993 - 2² = 44537989 is a prime.

It is not a weakly prime, because it can be changed into another prime (44537693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22268996 + 22268997.

It is an arithmetic number, because the mean of its divisors is an integer number (22268997).

Almost surely, 2^44537993 is an apocalyptic number.

It is an amenable number.

44537993 is a deficient number, since it is larger than the sum of its proper divisors (1).

44537993 is an equidigital number, since it uses as much as digits as its factorization.

44537993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 44537993 is about 6673.6791202454. The cubic root of 44537993 is about 354.4678743310.

The spelling of 44537993 in words is "forty-four million, five hundred thirty-seven thousand, nine hundred ninety-three".