98669999 has 2 divisors, whose sum is σ = 98670000. Its totient is φ = 98669998.

The previous prime is 98669981. The next prime is 98670017. The reversal of 98669999 is 99996689.

It is a balanced prime because it is at equal distance from previous prime (98669981) and next prime (98670017).

It is a cyclic number.

It is not a de Polignac number, because 98669999 - 2²⁰ = 97621423 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

98669999 is a modest number, since divided by 9999 gives 9866 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98669929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49334999 + 49335000.

It is an arithmetic number, because the mean of its divisors is an integer number (49335000).

Almost surely, 2^98669999 is an apocalyptic number.

98669999 is a deficient number, since it is larger than the sum of its proper divisors (1).

98669999 is an equidigital number, since it uses as much as digits as its factorization.

98669999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17006112, while the sum is 65.

The square root of 98669999 is about 9933.2773544284. The cubic root of 98669999 is about 462.0919199548.

The spelling of 98669999 in words is "ninety-eight million, six hundred sixty-nine thousand, nine hundred ninety-nine".