89735623 has 2 divisors, whose sum is σ = 89735624. Its totient is φ = 89735622.

The previous prime is 89735609. The next prime is 89735641. The reversal of 89735623 is 32653798.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89735623 - 2¹³ = 89727431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 89735623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89735683) 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, 44867811 + 44867812.

It is an arithmetic number, because the mean of its divisors is an integer number (44867812).

Almost surely, 2^89735623 is an apocalyptic number.

89735623 is a deficient number, since it is larger than the sum of its proper divisors (1).

89735623 is an equidigital number, since it uses as much as digits as its factorization.

89735623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 89735623 is about 9472.8888413197. Note that the first 4 decimals coincide. The cubic root of 89735623 is about 447.7012367499.

The spelling of 89735623 in words is "eighty-nine million, seven hundred thirty-five thousand, six hundred twenty-three".