99988247 has 2 divisors, whose sum is σ = 99988248. Its totient is φ = 99988246.

The previous prime is 99988219. The next prime is 99988253. The reversal of 99988247 is 74288999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99988247 - 2⁸ = 99987991 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99988192 and 99988201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99988277) 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, 49994123 + 49994124.

It is an arithmetic number, because the mean of its divisors is an integer number (49994124).

Almost surely, 2^99988247 is an apocalyptic number.

99988247 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988247 is an equidigital number, since it uses as much as digits as its factorization.

99988247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 56.

The square root of 99988247 is about 9999.4123327324. The cubic root of 99988247 is about 464.1406984510.

The spelling of 99988247 in words is "ninety-nine million, nine hundred eighty-eight thousand, two hundred forty-seven".