99840701 has 2 divisors, whose sum is σ = 99840702. Its totient is φ = 99840700.

The previous prime is 99840691. The next prime is 99840709. The reversal of 99840701 is 10704899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54007801 + 45832900 = 7349^2 + 6770^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99840701 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_5752766 and since 99840701 and 5752766 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99840709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49920350 + 49920351.

It is an arithmetic number, because the mean of its divisors is an integer number (49920351).

Almost surely, 2^99840701 is an apocalyptic number.

It is an amenable number.

99840701 is a deficient number, since it is larger than the sum of its proper divisors (1).

99840701 is an equidigital number, since it uses as much as digits as its factorization.

99840701 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 99840701 is about 9992.0318754496. The cubic root of 99840701 is about 463.9122855524.

The spelling of 99840701 in words is "ninety-nine million, eight hundred forty thousand, seven hundred one".