9969923 has 2 divisors, whose sum is σ = 9969924. Its totient is φ = 9969922.

The previous prime is 9969919. The next prime is 9969931. The reversal of 9969923 is 3299699.

9969923 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 9969923 - 2² = 9969919 is a prime.

It is not a weakly prime, because it can be changed into another prime (9969913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4984961 + 4984962.

It is an arithmetic number, because the mean of its divisors is an integer number (4984962).

Almost surely, 2^9969923 is an apocalyptic number.

9969923 is a deficient number, since it is larger than the sum of its proper divisors (1).

9969923 is an equidigital number, since it uses as much as digits as its factorization.

9969923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 236196, while the sum is 47.

The square root of 9969923 is about 3157.5184876735. The cubic root of 9969923 is about 215.2272556492.

The spelling of 9969923 in words is "nine million, nine hundred sixty-nine thousand, nine hundred twenty-three".