43000049 has 2 divisors, whose sum is σ = 43000050. Its totient is φ = 43000048.

The previous prime is 43000037. The next prime is 43000051. The reversal of 43000049 is 94000034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32855824 + 10144225 = 5732^2 + 3185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43000049 is a prime.

Together with 43000051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43000019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21500024 + 21500025.

It is an arithmetic number, because the mean of its divisors is an integer number (21500025).

Almost surely, 2^43000049 is an apocalyptic number.

It is an amenable number.

43000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

43000049 is an equidigital number, since it uses as much as digits as its factorization.

43000049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 43000049 is about 6557.4422605159. The cubic root of 43000049 is about 350.3399391134.

The spelling of 43000049 in words is "forty-three million, forty-nine", and thus it is an aban number and an uban number.