43040993 has 2 divisors, whose sum is σ = 43040994. Its totient is φ = 43040992.

The previous prime is 43040969. The next prime is 43041043. The reversal of 43040993 is 39904034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26337424 + 16703569 = 5132^2 + 4087^2 .

It is a cyclic number.

It is not a de Polignac number, because 43040993 - 2¹⁴ = 43024609 is a prime.

It is not a weakly prime, because it can be changed into another prime (43040903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21520496 + 21520497.

It is an arithmetic number, because the mean of its divisors is an integer number (21520497).

Almost surely, 2^43040993 is an apocalyptic number.

It is an amenable number.

43040993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43040993 is an equidigital number, since it uses as much as digits as its factorization.

43040993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 32.

The square root of 43040993 is about 6560.5634666544. The cubic root of 43040993 is about 350.4510999795.

The spelling of 43040993 in words is "forty-three million, forty thousand, nine hundred ninety-three".