99988487 has 2 divisors, whose sum is σ = 99988488. Its totient is φ = 99988486.

The previous prime is 99988481. The next prime is 99988489. The reversal of 99988487 is 78488999.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99988487 is a prime.

Together with 99988489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99988481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994243 + 49994244.

It is an arithmetic number, because the mean of its divisors is an integer number (49994244).

Almost surely, 2^99988487 is an apocalyptic number.

99988487 is a deficient number, since it is larger than the sum of its proper divisors (1).

99988487 is an equidigital number, since it uses as much as digits as its factorization.

99988487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 62.

The square root of 99988487 is about 9999.4243334304. The cubic root of 99988487 is about 464.1410698069.

The spelling of 99988487 in words is "ninety-nine million, nine hundred eighty-eight thousand, four hundred eighty-seven".