99842317 has 4 divisors (see below), whose sum is σ = 102540796. Its totient is φ = 97143840.

The previous prime is 99842311. The next prime is 99842341. The reversal of 99842317 is 71324899.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71324899 = 541 ⋅131839.

It can be written as a sum of positive squares in 2 ways, for example, as 80030916 + 19811401 = 8946^2 + 4451^2 .

It is a cyclic number.

It is not a de Polignac number, because 99842317 - 2⁷ = 99842189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99842311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1349184 + ... + 1349257.

It is an arithmetic number, because the mean of its divisors is an integer number (25635199).

Almost surely, 2^99842317 is an apocalyptic number.

It is an amenable number.

99842317 is a deficient number, since it is larger than the sum of its proper divisors (2698479).

99842317 is a wasteful number, since it uses less digits than its factorization.

99842317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698478.

The product of its digits is 108864, while the sum is 43.

The square root of 99842317 is about 9992.1127395561. The cubic root of 99842317 is about 463.9147884669.

The spelling of 99842317 in words is "ninety-nine million, eight hundred forty-two thousand, three hundred seventeen".