98699999 has 2 divisors, whose sum is σ = 98700000. Its totient is φ = 98699998.

The previous prime is 98699989. The next prime is 98700029. The reversal of 98699999 is 99999689.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-98699999 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

98699999 is a modest number, since divided by 9999 gives 9869 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (98699989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49349999 + 49350000.

It is an arithmetic number, because the mean of its divisors is an integer number (49350000).

Almost surely, 2^98699999 is an apocalyptic number.

98699999 is a deficient number, since it is larger than the sum of its proper divisors (1).

98699999 is an equidigital number, since it uses as much as digits as its factorization.

98699999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25509168, while the sum is 68.

The square root of 98699999 is about 9934.7873152876. The cubic root of 98699999 is about 462.1387472682.

The spelling of 98699999 in words is "ninety-eight million, six hundred ninety-nine thousand, nine hundred ninety-nine".