9973001 has 2 divisors, whose sum is σ = 9973002. Its totient is φ = 9973000.

The previous prime is 9972997. The next prime is 9973003. The reversal of 9973001 is 1003799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9461776 + 511225 = 3076^2 + 715^2 .

It is a cyclic number.

It is not a de Polignac number, because 9973001 - 2² = 9972997 is a prime.

Together with 9973003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (9973003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986500 + 4986501.

It is an arithmetic number, because the mean of its divisors is an integer number (4986501).

Almost surely, 2^9973001 is an apocalyptic number.

It is an amenable number.

9973001 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973001 is an equidigital number, since it uses as much as digits as its factorization.

9973001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1701, while the sum is 29.

The square root of 9973001 is about 3158.0058581326. The cubic root of 9973001 is about 215.2494023040.

The spelling of 9973001 in words is "nine million, nine hundred seventy-three thousand, one".