109223993 has 2 divisors, whose sum is σ = 109223994. Its totient is φ = 109223992.

The previous prime is 109223957. The next prime is 109224019. The reversal of 109223993 is 399322901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84143929 + 25080064 = 9173^2 + 5008^2 .

It is an emirp because it is prime and its reverse (399322901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 109223993 - 2¹² = 109219897 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (109223293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54611996 + 54611997.

It is an arithmetic number, because the mean of its divisors is an integer number (54611997).

Almost surely, 2^109223993 is an apocalyptic number.

It is an amenable number.

109223993 is a deficient number, since it is larger than the sum of its proper divisors (1).

109223993 is an equidigital number, since it uses as much as digits as its factorization.

109223993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 109223993 is about 10451.0283226102. The cubic root of 109223993 is about 478.0126059478.

The spelling of 109223993 in words is "one hundred nine million, two hundred twenty-three thousand, nine hundred ninety-three".