23534993 has 2 divisors, whose sum is σ = 23534994. Its totient is φ = 23534992.

The previous prime is 23534947. The next prime is 23535007. The reversal of 23534993 is 39943532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12730624 + 10804369 = 3568^2 + 3287^2 .

It is a cyclic number.

It is not a de Polignac number, because 23534993 - 2⁸ = 23534737 is a prime.

It is not a weakly prime, because it can be changed into another prime (23531993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11767496 + 11767497.

It is an arithmetic number, because the mean of its divisors is an integer number (11767497).

Almost surely, 2^23534993 is an apocalyptic number.

It is an amenable number.

23534993 is a deficient number, since it is larger than the sum of its proper divisors (1).

23534993 is an equidigital number, since it uses as much as digits as its factorization.

23534993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87480, while the sum is 38.

The square root of 23534993 is about 4851.2877671810. The cubic root of 23534993 is about 286.5748174885.

The spelling of 23534993 in words is "twenty-three million, five hundred thirty-four thousand, nine hundred ninety-three".