43882649 has 2 divisors, whose sum is σ = 43882650. Its totient is φ = 43882648.

The previous prime is 43882621. The next prime is 43882651. The reversal of 43882649 is 94628834.

43882649 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., 35617024 + 8265625 = 5968^2 + 2875^2 .

It is a cyclic number.

It is not a de Polignac number, because 43882649 - 2⁸ = 43882393 is a prime.

It is a Sophie Germain prime.

Together with 43882651, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (43882679) 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, 21941324 + 21941325.

It is an arithmetic number, because the mean of its divisors is an integer number (21941325).

Almost surely, 2^43882649 is an apocalyptic number.

It is an amenable number.

43882649 is a deficient number, since it is larger than the sum of its proper divisors (1).

43882649 is an equidigital number, since it uses as much as digits as its factorization.

43882649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The square root of 43882649 is about 6624.3980103855. The cubic root of 43882649 is about 352.7206981028.

The spelling of 43882649 in words is "forty-three million, eight hundred eighty-two thousand, six hundred forty-nine".