9673921 has 2 divisors, whose sum is σ = 9673922. Its totient is φ = 9673920.

The previous prime is 9673919. The next prime is 9673949. The reversal of 9673921 is 1293769.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9090225 + 583696 = 3015^2 + 764^2 .

It is a cyclic number.

It is not a de Polignac number, because 9673921 - 2¹ = 9673919 is a prime.

Together with 9673919, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9373921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4836960 + 4836961.

It is an arithmetic number, because the mean of its divisors is an integer number (4836961).

Almost surely, 2^9673921 is an apocalyptic number.

It is an amenable number.

9673921 is a deficient number, since it is larger than the sum of its proper divisors (1).

9673921 is an equidigital number, since it uses as much as digits as its factorization.

9673921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412, while the sum is 37.

The square root of 9673921 is about 3110.2927514946. The cubic root of 9673921 is about 213.0758250911.

The spelling of 9673921 in words is "nine million, six hundred seventy-three thousand, nine hundred twenty-one".