43797913 has 2 divisors, whose sum is σ = 43797914. Its totient is φ = 43797912.

The previous prime is 43797889. The next prime is 43797959. The reversal of 43797913 is 31979734.

43797913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37785609 + 6012304 = 6147^2 + 2452^2 .

It is a cyclic number.

It is not a de Polignac number, because 43797913 - 2²¹ = 41700761 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43797913.

It is not a weakly prime, because it can be changed into another prime (43792913) 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, 21898956 + 21898957.

It is an arithmetic number, because the mean of its divisors is an integer number (21898957).

Almost surely, 2^43797913 is an apocalyptic number.

It is an amenable number.

43797913 is a deficient number, since it is larger than the sum of its proper divisors (1).

43797913 is an equidigital number, since it uses as much as digits as its factorization.

43797913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 43797913 is about 6617.9991689332. Note that the first 3 decimals coincide. The cubic root of 43797913 is about 352.4935209982.

The spelling of 43797913 in words is "forty-three million, seven hundred ninety-seven thousand, nine hundred thirteen".