23489287 has 2 divisors, whose sum is σ = 23489288. Its totient is φ = 23489286.

The previous prime is 23489261. The next prime is 23489303. The reversal of 23489287 is 78298432.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23489287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23439287) 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, 11744643 + 11744644.

It is an arithmetic number, because the mean of its divisors is an integer number (11744644).

Almost surely, 2^23489287 is an apocalyptic number.

23489287 is a deficient number, since it is larger than the sum of its proper divisors (1).

23489287 is an equidigital number, since it uses as much as digits as its factorization.

23489287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 43.

The square root of 23489287 is about 4846.5747698761. The cubic root of 23489287 is about 286.3891835992.

The spelling of 23489287 in words is "twenty-three million, four hundred eighty-nine thousand, two hundred eighty-seven".