43744993 has 2 divisors, whose sum is σ = 43744994. Its totient is φ = 43744992.

The previous prime is 43744969. The next prime is 43744997. The reversal of 43744993 is 39944734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25280784 + 18464209 = 5028^2 + 4297^2 .

It is a cyclic number.

It is not a de Polignac number, because 43744993 - 2²⁵ = 10190561 is a prime.

It is not a weakly prime, because it can be changed into another prime (43744997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21872496 + 21872497.

It is an arithmetic number, because the mean of its divisors is an integer number (21872497).

Almost surely, 2^43744993 is an apocalyptic number.

It is an amenable number.

43744993 is a deficient number, since it is larger than the sum of its proper divisors (1).

43744993 is an equidigital number, since it uses as much as digits as its factorization.

43744993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 326592, while the sum is 43.

The square root of 43744993 is about 6613.9997732083. Note that the first 3 decimals coincide. The cubic root of 43744993 is about 352.3514938715.

The spelling of 43744993 in words is "forty-three million, seven hundred forty-four thousand, nine hundred ninety-three".