43473889 has 2 divisors, whose sum is σ = 43473890. Its totient is φ = 43473888.

The previous prime is 43473869. The next prime is 43473923. The reversal of 43473889 is 98837434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33814225 + 9659664 = 5815^2 + 3108^2 .

It is a cyclic number.

It is not a de Polignac number, because 43473889 - 2⁷ = 43473761 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (43473869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21736944 + 21736945.

It is an arithmetic number, because the mean of its divisors is an integer number (21736945).

Almost surely, 2^43473889 is an apocalyptic number.

It is an amenable number.

43473889 is a deficient number, since it is larger than the sum of its proper divisors (1).

43473889 is an equidigital number, since it uses as much as digits as its factorization.

43473889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 46.

The square root of 43473889 is about 6593.4732122001. The cubic root of 43473889 is about 351.6221005745.

The spelling of 43473889 in words is "forty-three million, four hundred seventy-three thousand, eight hundred eighty-nine".