9973971 has 24 divisors (see below), whose sum is σ = 16999424. Its totient is φ = 5514480.

The previous prime is 9973967. The next prime is 9973981. The reversal of 9973971 is 1793799.

It is not a de Polignac number, because 9973971 - 2² = 9973967 is a prime.

It is a nude number because it is divisible by every one of its digits.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9973921) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 601 + ... + 4506.

Almost surely, 2^9973971 is an apocalyptic number.

9973971 is a deficient number, since it is larger than the sum of its proper divisors (7025453).

9973971 is a wasteful number, since it uses less digits than its factorization.

9973971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151 (or 5148 counting only the distinct ones).

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

The square root of 9973971 is about 3158.1594323276. The cubic root of 9973971 is about 215.2563806499.

The spelling of 9973971 in words is "nine million, nine hundred seventy-three thousand, nine hundred seventy-one".