43484989 has 2 divisors, whose sum is σ = 43484990. Its totient is φ = 43484988.

The previous prime is 43484981. The next prime is 43485047. The reversal of 43484989 is 98948434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32376100 + 11108889 = 5690^2 + 3333^2 .

It is a cyclic number.

It is not a de Polignac number, because 43484989 - 2³ = 43484981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43484981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21742494 + 21742495.

It is an arithmetic number, because the mean of its divisors is an integer number (21742495).

Almost surely, 2^43484989 is an apocalyptic number.

It is an amenable number.

43484989 is a deficient number, since it is larger than the sum of its proper divisors (1).

43484989 is an equidigital number, since it uses as much as digits as its factorization.

43484989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 995328, while the sum is 49.

The square root of 43484989 is about 6594.3148999726. The cubic root of 43484989 is about 351.6520240778.

The spelling of 43484989 in words is "forty-three million, four hundred eighty-four thousand, nine hundred eighty-nine".