9972973 has 2 divisors, whose sum is σ = 9972974. Its totient is φ = 9972972.

The previous prime is 9972913. The next prime is 9972997. The reversal of 9972973 is 3792799.

9972973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9972964 + 9 = 3158^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 9972973 - 2¹³ = 9964781 is a prime.

9972973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9972913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986486 + 4986487.

It is an arithmetic number, because the mean of its divisors is an integer number (4986487).

Almost surely, 2^9972973 is an apocalyptic number.

It is an amenable number.

9972973 is a deficient number, since it is larger than the sum of its proper divisors (1).

9972973 is an equidigital number, since it uses as much as digits as its factorization.

9972973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214326, while the sum is 46.

The square root of 9972973 is about 3158.0014249522. The cubic root of 9972973 is about 215.2492008605.

The spelling of 9972973 in words is "nine million, nine hundred seventy-two thousand, nine hundred seventy-three".