89843749 has 2 divisors, whose sum is σ = 89843750. Its totient is φ = 89843748.

The previous prime is 89843729. The next prime is 89843753. The reversal of 89843749 is 94734898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 43467649 = 6810^2 + 6593^2 .

It is a cyclic number.

It is not a de Polignac number, because 89843749 - 2²¹ = 87746597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 89843696 and 89843705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89843729) 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, 44921874 + 44921875.

It is an arithmetic number, because the mean of its divisors is an integer number (44921875).

Almost surely, 2^89843749 is an apocalyptic number.

It is an amenable number.

89843749 is a deficient number, since it is larger than the sum of its proper divisors (1).

89843749 is an equidigital number, since it uses as much as digits as its factorization.

89843749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1741824, while the sum is 52.

The square root of 89843749 is about 9478.5942523140. The cubic root of 89843749 is about 447.8809822153.

The spelling of 89843749 in words is "eighty-nine million, eight hundred forty-three thousand, seven hundred forty-nine".