89727389 has 2 divisors, whose sum is σ = 89727390. Its totient is φ = 89727388.

The previous prime is 89727269. The next prime is 89727403. The reversal of 89727389 is 98372798.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83265625 + 6461764 = 9125^2 + 2542^2 .

It is a cyclic number.

It is not a de Polignac number, because 89727389 - 2⁸ = 89727133 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89727389.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89327389) 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, 44863694 + 44863695.

It is an arithmetic number, because the mean of its divisors is an integer number (44863695).

Almost surely, 2^89727389 is an apocalyptic number.

It is an amenable number.

89727389 is a deficient number, since it is larger than the sum of its proper divisors (1).

89727389 is an equidigital number, since it uses as much as digits as its factorization.

89727389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 53.

The square root of 89727389 is about 9472.4542226395. The cubic root of 89727389 is about 447.6875428766.

It can be divided in two parts, 8972 and 7389, that added together give a palindrome (16361).

The spelling of 89727389 in words is "eighty-nine million, seven hundred twenty-seven thousand, three hundred eighty-nine".