99985297 has 2 divisors, whose sum is σ = 99985298. Its totient is φ = 99985296.

The previous prime is 99985273. The next prime is 99985321. The reversal of 99985297 is 79258999.

It is a balanced prime because it is at equal distance from previous prime (99985273) and next prime (99985321).

It can be written as a sum of positive squares in only one way, i.e., 90554256 + 9431041 = 9516^2 + 3071^2 .

It is an emirp because it is prime and its reverse (79258999) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99985297 is a prime.

It is not a weakly prime, because it can be changed into another prime (99985217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49992648 + 49992649.

It is an arithmetic number, because the mean of its divisors is an integer number (49992649).

Almost surely, 2^99985297 is an apocalyptic number.

It is an amenable number.

99985297 is a deficient number, since it is larger than the sum of its proper divisors (1).

99985297 is an equidigital number, since it uses as much as digits as its factorization.

99985297 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3674160, while the sum is 58.

The square root of 99985297 is about 9999.2648229757. The cubic root of 99985297 is about 464.1361338194.

The spelling of 99985297 in words is "ninety-nine million, nine hundred eighty-five thousand, two hundred ninety-seven".