99967859 has 2 divisors, whose sum is σ = 99967860. Its totient is φ = 99967858.

The previous prime is 99967841. The next prime is 99967897. The reversal of 99967859 is 95876999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99967859 is a prime.

It is not a weakly prime, because it can be changed into another prime (99967159) 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, 49983929 + 49983930.

It is an arithmetic number, because the mean of its divisors is an integer number (49983930).

Almost surely, 2^99967859 is an apocalyptic number.

99967859 is a deficient number, since it is larger than the sum of its proper divisors (1).

99967859 is an equidigital number, since it uses as much as digits as its factorization.

99967859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11022480, while the sum is 62.

The square root of 99967859 is about 9998.3928208488. The cubic root of 99967859 is about 464.1091495970.

The spelling of 99967859 in words is "ninety-nine million, nine hundred sixty-seven thousand, eight hundred fifty-nine".