9970845217 has 4 divisors (see below), whose sum is σ = 10008757440. Its totient is φ = 9932932996.

The previous prime is 9970845179. The next prime is 9970845257. The reversal of 9970845217 is 7125480799.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9970845217 - 2⁷ = 9970845089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9970845257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18955717 + ... + 18956242.

It is an arithmetic number, because the mean of its divisors is an integer number (2502189360).

Almost surely, 2^9970845217 is an apocalyptic number.

It is an amenable number.

9970845217 is a deficient number, since it is larger than the sum of its proper divisors (37912223).

9970845217 is a wasteful number, since it uses less digits than its factorization.

9970845217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37912222.

The product of its (nonzero) digits is 1270080, while the sum is 52.

The square root of 9970845217 is about 99854.1196796607. The cubic root of 9970845217 is about 2152.3389161201.

The spelling of 9970845217 in words is "nine billion, nine hundred seventy million, eight hundred forty-five thousand, two hundred seventeen".