99717983 has 2 divisors, whose sum is σ = 99717984. Its totient is φ = 99717982.

The previous prime is 99717929. The next prime is 99717991. The reversal of 99717983 is 38971799.

It is a strong prime.

It is an emirp because it is prime and its reverse (38971799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99717983 - 2¹⁴ = 99701599 is a prime.

It is a super-2 number, since 2×99717983² = 19887352267176578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99717913) 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, 49858991 + 49858992.

It is an arithmetic number, because the mean of its divisors is an integer number (49858992).

Almost surely, 2^99717983 is an apocalyptic number.

99717983 is a deficient number, since it is larger than the sum of its proper divisors (1).

99717983 is an equidigital number, since it uses as much as digits as its factorization.

99717983 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 53.

The square root of 99717983 is about 9985.8891942581. The cubic root of 99717983 is about 463.7221368845.

The spelling of 99717983 in words is "ninety-nine million, seven hundred seventeen thousand, nine hundred eighty-three".