43453489 has 2 divisors, whose sum is σ = 43453490. Its totient is φ = 43453488.

The previous prime is 43453471. The next prime is 43453507. The reversal of 43453489 is 98435434.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (43453471) and next prime (43453507).

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 20250000 = 4817^2 + 4500^2 .

It is a cyclic number.

It is not a de Polignac number, because 43453489 - 2⁵ = 43453457 is a prime.

It is not a weakly prime, because it can be changed into another prime (43453889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21726744 + 21726745.

It is an arithmetic number, because the mean of its divisors is an integer number (21726745).

Almost surely, 2^43453489 is an apocalyptic number.

It is an amenable number.

43453489 is a deficient number, since it is larger than the sum of its proper divisors (1).

43453489 is an equidigital number, since it uses as much as digits as its factorization.

43453489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 43453489 is about 6591.9260463085. The cubic root of 43453489 is about 351.5670927426.

The spelling of 43453489 in words is "forty-three million, four hundred fifty-three thousand, four hundred eighty-nine".