23868491 has 2 divisors, whose sum is σ = 23868492. Its totient is φ = 23868490.

The previous prime is 23868463. The next prime is 23868511. The reversal of 23868491 is 19486832.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23868491 is a prime.

It is not a weakly prime, because it can be changed into another prime (23868401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11934245 + 11934246.

It is an arithmetic number, because the mean of its divisors is an integer number (11934246).

Almost surely, 2^23868491 is an apocalyptic number.

23868491 is a deficient number, since it is larger than the sum of its proper divisors (1).

23868491 is an equidigital number, since it uses as much as digits as its factorization.

23868491 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 23868491 is about 4885.5389671970. The cubic root of 23868491 is about 287.9220910339.

The spelling of 23868491 in words is "twenty-three million, eight hundred sixty-eight thousand, four hundred ninety-one".