43993193 has 2 divisors, whose sum is σ = 43993194. Its totient is φ = 43993192.

The previous prime is 43993133. The next prime is 43993219. The reversal of 43993193 is 39139934.

43993193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37295449 + 6697744 = 6107^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 43993193 - 2¹⁴ = 43976809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43993193.

It is not a weakly prime, because it can be changed into another prime (43993133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21996596 + 21996597.

It is an arithmetic number, because the mean of its divisors is an integer number (21996597).

Almost surely, 2^43993193 is an apocalyptic number.

It is an amenable number.

43993193 is a deficient number, since it is larger than the sum of its proper divisors (1).

43993193 is an equidigital number, since it uses as much as digits as its factorization.

43993193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 78732, while the sum is 41.

The square root of 43993193 is about 6632.7364639340. The cubic root of 43993193 is about 353.0166272292.

The spelling of 43993193 in words is "forty-three million, nine hundred ninety-three thousand, one hundred ninety-three".