23423993 has 2 divisors, whose sum is σ = 23423994. Its totient is φ = 23423992.

The previous prime is 23423989. The next prime is 23424013. The reversal of 23423993 is 39932432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16096144 + 7327849 = 4012^2 + 2707^2 .

It is a cyclic number.

It is not a de Polignac number, because 23423993 - 2² = 23423989 is a prime.

It is not a weakly prime, because it can be changed into another prime (23423963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11711996 + 11711997.

It is an arithmetic number, because the mean of its divisors is an integer number (11711997).

Almost surely, 2^23423993 is an apocalyptic number.

It is an amenable number.

23423993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23423993 is an equidigital number, since it uses as much as digits as its factorization.

23423993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 35.

The square root of 23423993 is about 4839.8339847561. The cubic root of 23423993 is about 286.1235753000.

The spelling of 23423993 in words is "twenty-three million, four hundred twenty-three thousand, nine hundred ninety-three".