9972817793 has 4 divisors (see below), whose sum is σ = 10497702960. Its totient is φ = 9447932628.

The previous prime is 9972817739. The next prime is 9972817807. The reversal of 9972817793 is 3977182799.

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 de Polignac number, because none of the positive numbers 2^k-9972817793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9972817093) 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, 262442555 + ... + 262442592.

It is an arithmetic number, because the mean of its divisors is an integer number (2624425740).

Almost surely, 2^9972817793 is an apocalyptic number.

It is an amenable number.

9972817793 is a deficient number, since it is larger than the sum of its proper divisors (524885167).

9972817793 is a wasteful number, since it uses less digits than its factorization.

9972817793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524885166.

The product of its digits is 12002256, while the sum is 62.

The square root of 9972817793 is about 99863.9964802130. The cubic root of 9972817793 is about 2152.4808423075.

The spelling of 9972817793 in words is "nine billion, nine hundred seventy-two million, eight hundred seventeen thousand, seven hundred ninety-three".