9917298893 has 4 divisors (see below), whose sum is σ = 9948983868. Its totient is φ = 9885613920.

The previous prime is 9917298887. The next prime is 9917298917. The reversal of 9917298893 is 3988927199.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3988927199 = 433 ⋅9212303.

It can be written as a sum of positive squares in 2 ways, for example, as 3217385284 + 6699913609 = 56722^2 + 81853^2 .

It is a cyclic number.

It is not a de Polignac number, because 9917298893 - 2²⁶ = 9850190029 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 (9917298863) 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, 15842018 + ... + 15842643.

It is an arithmetic number, because the mean of its divisors is an integer number (2487245967).

Almost surely, 2^9917298893 is an apocalyptic number.

It is an amenable number.

9917298893 is a deficient number, since it is larger than the sum of its proper divisors (31684975).

9917298893 is a wasteful number, since it uses less digits than its factorization.

9917298893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31684974.

The product of its digits is 17635968, while the sum is 65.

The square root of 9917298893 is about 99585.6359772834. The cubic root of 9917298893 is about 2148.4791041548.

The spelling of 9917298893 in words is "nine billion, nine hundred seventeen million, two hundred ninety-eight thousand, eight hundred ninety-three".