99984239 has 2 divisors, whose sum is σ = 99984240. Its totient is φ = 99984238.

The previous prime is 99984221. The next prime is 99984253. The reversal of 99984239 is 93248999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99984239 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99984439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49992119 + 49992120.

It is an arithmetic number, because the mean of its divisors is an integer number (49992120).

Almost surely, 2^99984239 is an apocalyptic number.

99984239 is a deficient number, since it is larger than the sum of its proper divisors (1).

99984239 is an equidigital number, since it uses as much as digits as its factorization.

99984239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1259712, while the sum is 53.

The square root of 99984239 is about 9999.2119189464. The cubic root of 99984239 is about 464.1344967195.

The spelling of 99984239 in words is "ninety-nine million, nine hundred eighty-four thousand, two hundred thirty-nine".