43489477 has 2 divisors, whose sum is σ = 43489478. Its totient is φ = 43489476.

The previous prime is 43489463. The next prime is 43489483. The reversal of 43489477 is 77498434.

43489477 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., 30536676 + 12952801 = 5526^2 + 3599^2 .

It is a cyclic number.

It is not a de Polignac number, because 43489477 - 2¹⁹ = 42965189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43489447) 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, 21744738 + 21744739.

It is an arithmetic number, because the mean of its divisors is an integer number (21744739).

Almost surely, 2^43489477 is an apocalyptic number.

It is an amenable number.

43489477 is a deficient number, since it is larger than the sum of its proper divisors (1).

43489477 is an equidigital number, since it uses as much as digits as its factorization.

43489477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 46.

The square root of 43489477 is about 6594.6551843140. The cubic root of 43489477 is about 351.6641214324.

The spelling of 43489477 in words is "forty-three million, four hundred eighty-nine thousand, four hundred seventy-seven".