9973967 has 2 divisors, whose sum is σ = 9973968. Its totient is φ = 9973966.

The previous prime is 9973933. The next prime is 9973981. The reversal of 9973967 is 7693799.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9973967 - 2⁶ = 9973903 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9973367) 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, 4986983 + 4986984.

It is an arithmetic number, because the mean of its divisors is an integer number (4986984).

Almost surely, 2^9973967 is an apocalyptic number.

9973967 is a deficient number, since it is larger than the sum of its proper divisors (1).

9973967 is an equidigital number, since it uses as much as digits as its factorization.

9973967 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 642978, while the sum is 50.

The square root of 9973967 is about 3158.1587990473. The cubic root of 9973967 is about 215.2563518742.

The spelling of 9973967 in words is "nine million, nine hundred seventy-three thousand, nine hundred sixty-seven".