23147689 has 2 divisors, whose sum is σ = 23147690. Its totient is φ = 23147688.

The previous prime is 23147671. The next prime is 23147699. The reversal of 23147689 is 98674132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14784025 + 8363664 = 3845^2 + 2892^2 .

It is a cyclic number.

It is not a de Polignac number, because 23147689 - 2⁷ = 23147561 is a prime.

It is not a weakly prime, because it can be changed into another prime (23147639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11573844 + 11573845.

It is an arithmetic number, because the mean of its divisors is an integer number (11573845).

Almost surely, 2^23147689 is an apocalyptic number.

It is an amenable number.

23147689 is a deficient number, since it is larger than the sum of its proper divisors (1).

23147689 is an equidigital number, since it uses as much as digits as its factorization.

23147689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 23147689 is about 4811.2045269350. The cubic root of 23147689 is about 284.9941067828.

The spelling of 23147689 in words is "twenty-three million, one hundred forty-seven thousand, six hundred eighty-nine".