99989783 has 2 divisors, whose sum is σ = 99989784. Its totient is φ = 99989782.

The previous prime is 99989759. The next prime is 99989803. The reversal of 99989783 is 38798999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99989783 - 2¹⁴ = 99973399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99989083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994891 + 49994892.

It is an arithmetic number, because the mean of its divisors is an integer number (49994892).

Almost surely, 2^99989783 is an apocalyptic number.

99989783 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989783 is an equidigital number, since it uses as much as digits as its factorization.

99989783 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8817984, while the sum is 62.

The square root of 99989783 is about 9999.4891369509. The cubic root of 99989783 is about 464.1430751185.

The spelling of 99989783 in words is "ninety-nine million, nine hundred eighty-nine thousand, seven hundred eighty-three".