23276389 has 2 divisors, whose sum is σ = 23276390. Its totient is φ = 23276388.

The previous prime is 23276347. The next prime is 23276401. The reversal of 23276389 is 98367232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23203489 + 72900 = 4817^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 23276389 - 2⁹ = 23275877 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23276339) 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, 11638194 + 11638195.

It is an arithmetic number, because the mean of its divisors is an integer number (11638195).

Almost surely, 2^23276389 is an apocalyptic number.

It is an amenable number.

23276389 is a deficient number, since it is larger than the sum of its proper divisors (1).

23276389 is an equidigital number, since it uses as much as digits as its factorization.

23276389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 23276389 is about 4824.5610162998. The cubic root of 23276389 is about 285.5213152573.

The spelling of 23276389 in words is "twenty-three million, two hundred seventy-six thousand, three hundred eighty-nine".