43806401 has 2 divisors, whose sum is σ = 43806402. Its totient is φ = 43806400.

The previous prime is 43806377. The next prime is 43806403. The reversal of 43806401 is 10460834.

43806401 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., 38626225 + 5180176 = 6215^2 + 2276^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43806401 is a prime.

Together with 43806403, 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 (43806403) 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, 21903200 + 21903201.

It is an arithmetic number, because the mean of its divisors is an integer number (21903201).

Almost surely, 2^43806401 is an apocalyptic number.

It is an amenable number.

43806401 is a deficient number, since it is larger than the sum of its proper divisors (1).

43806401 is an equidigital number, since it uses as much as digits as its factorization.

43806401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 43806401 is about 6618.6404193006. The cubic root of 43806401 is about 352.5162905135.

It can be divided in two parts, 4 and 3806401, that multiplied together give a square (15225604 = 3902²).

The spelling of 43806401 in words is "forty-three million, eight hundred six thousand, four hundred one".