23973487 has 2 divisors, whose sum is σ = 23973488. Its totient is φ = 23973486.

The previous prime is 23973463. The next prime is 23973491. The reversal of 23973487 is 78437932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 23973487 - 2⁷ = 23973359 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23973407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11986743 + 11986744.

It is an arithmetic number, because the mean of its divisors is an integer number (11986744).

Almost surely, 2^23973487 is an apocalyptic number.

23973487 is a deficient number, since it is larger than the sum of its proper divisors (1).

23973487 is an equidigital number, since it uses as much as digits as its factorization.

23973487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016, while the sum is 43.

The square root of 23973487 is about 4896.2727660946. The cubic root of 23973487 is about 288.3436572497.

The spelling of 23973487 in words is "twenty-three million, nine hundred seventy-three thousand, four hundred eighty-seven".