23867993 has 2 divisors, whose sum is σ = 23867994. Its totient is φ = 23867992.

The previous prime is 23867989. The next prime is 23868011. The reversal of 23867993 is 39976832.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23697424 + 170569 = 4868^2 + 413^2 .

It is a cyclic number.

It is not a de Polignac number, because 23867993 - 2² = 23867989 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23867953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11933996 + 11933997.

It is an arithmetic number, because the mean of its divisors is an integer number (11933997).

Almost surely, 2^23867993 is an apocalyptic number.

It is an amenable number.

23867993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23867993 is an equidigital number, since it uses as much as digits as its factorization.

23867993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 489888, while the sum is 47.

The square root of 23867993 is about 4885.4880001900. The cubic root of 23867993 is about 287.9200885865.

The spelling of 23867993 in words is "twenty-three million, eight hundred sixty-seven thousand, nine hundred ninety-three".