9973321 has 2 divisors, whose sum is σ = 9973322. Its totient is φ = 9973320.

The previous prime is 9973307. The next prime is 9973331. The reversal of 9973321 is 1233799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9388096 + 585225 = 3064^2 + 765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9973321 is a prime.

It is a nialpdrome in base 10.

It is not a weakly prime, because it can be changed into another prime (9973331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4986660 + 4986661.

It is an arithmetic number, because the mean of its divisors is an integer number (4986661).

Almost surely, 2^9973321 is an apocalyptic number.

It is an amenable number.

9973321 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973321 is an equidigital number, since it uses as much as digits as its factorization.

9973321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 34.

The square root of 9973321 is about 3158.0565226101. The cubic root of 9973321 is about 215.2517044888.

The spelling of 9973321 in words is "nine million, nine hundred seventy-three thousand, three hundred twenty-one".