99179999 has 2 divisors, whose sum is σ = 99180000. Its totient is φ = 99179998.

The previous prime is 99179963. The next prime is 99180041. The reversal of 99179999 is 99997199.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99179999 - 2¹² = 99175903 is a prime.

It is a Chen prime.

99179999 is a modest number, since divided by 9999 gives 9917 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99179959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49589999 + 49590000.

It is an arithmetic number, because the mean of its divisors is an integer number (49590000).

Almost surely, 2^99179999 is an apocalyptic number.

99179999 is a deficient number, since it is larger than the sum of its proper divisors (1).

99179999 is an equidigital number, since it uses as much as digits as its factorization.

99179999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3720087, while the sum is 62.

The square root of 99179999 is about 9958.9155534124. The cubic root of 99179999 is about 462.8866971906.

The spelling of 99179999 in words is "ninety-nine million, one hundred seventy-nine thousand, nine hundred ninety-nine".