97099999 has 2 divisors, whose sum is σ = 97100000. Its totient is φ = 97099998.

The previous prime is 97099993. The next prime is 97100027. The reversal of 97099999 is 99999079.

It is a weak prime.

It is an emirp because it is prime and its reverse (99999079) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97099999 - 2³ = 97099991 is a prime.

97099999 is a modest number, since divided by 9999 gives 9709 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97099991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48549999 + 48550000.

It is an arithmetic number, because the mean of its divisors is an integer number (48550000).

Almost surely, 2^97099999 is an apocalyptic number.

97099999 is a deficient number, since it is larger than the sum of its proper divisors (1).

97099999 is an equidigital number, since it uses as much as digits as its factorization.

97099999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3720087, while the sum is 61.

The square root of 97099999 is about 9853.9331741189. The cubic root of 97099999 is about 459.6279269164.

The spelling of 97099999 in words is "ninety-seven million, ninety-nine thousand, nine hundred ninety-nine".