99989627 has 2 divisors, whose sum is σ = 99989628. Its totient is φ = 99989626.

The previous prime is 99989599. The next prime is 99989639. The reversal of 99989627 is 72698999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99989627 - 2¹⁶ = 99924091 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99989657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49994813 + 49994814.

It is an arithmetic number, because the mean of its divisors is an integer number (49994814).

Almost surely, 2^99989627 is an apocalyptic number.

99989627 is a deficient number, since it is larger than the sum of its proper divisors (1).

99989627 is an equidigital number, since it uses as much as digits as its factorization.

99989627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 59.

The square root of 99989627 is about 9999.4813365494. The cubic root of 99989627 is about 464.1428337393.

The spelling of 99989627 in words is "ninety-nine million, nine hundred eighty-nine thousand, six hundred twenty-seven".