9971793 has 12 divisors (see below), whose sum is σ = 15511860. Its totient is φ = 6136416.

The previous prime is 9971783. The next prime is 9971807. The reversal of 9971793 is 3971799.

It can be written as a sum of positive squares in 2 ways, for example, as 3560769 + 6411024 = 1887^2 + 2532^2 .

It is not a de Polignac number, because 9971793 - 2⁵ = 9971761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9971783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42498 + ... + 42731.

It is an arithmetic number, because the mean of its divisors is an integer number (1292655).

Almost surely, 2^9971793 is an apocalyptic number.

It is an amenable number.

9971793 is a deficient number, since it is larger than the sum of its proper divisors (5540067).

9971793 is a wasteful number, since it uses less digits than its factorization.

9971793 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85248 (or 85245 counting only the distinct ones).

The product of its digits is 107163, while the sum is 45.

The square root of 9971793 is about 3157.8145924041. The cubic root of 9971793 is about 215.2407111128.

The spelling of 9971793 in words is "nine million, nine hundred seventy-one thousand, seven hundred ninety-three".