9919373 has 2 divisors, whose sum is σ = 9919374. Its totient is φ = 9919372.

The previous prime is 9919361. The next prime is 9919379. The reversal of 9919373 is 3739199.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9815689 + 103684 = 3133^2 + 322^2 .

It is an emirp because it is prime and its reverse (3739199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9919373 - 2⁶ = 9919309 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9919373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9919379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959686 + 4959687.

It is an arithmetic number, because the mean of its divisors is an integer number (4959687).

Almost surely, 2^9919373 is an apocalyptic number.

It is an amenable number.

9919373 is a deficient number, since it is larger than the sum of its proper divisors (1).

9919373 is an equidigital number, since it uses as much as digits as its factorization.

9919373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 41.

The square root of 9919373 is about 3149.5036116823. The cubic root of 9919373 is about 214.8628871579.

The spelling of 9919373 in words is "nine million, nine hundred nineteen thousand, three hundred seventy-three".