23789861 has 2 divisors, whose sum is σ = 23789862. Its totient is φ = 23789860.

The previous prime is 23789839. The next prime is 23789867. The reversal of 23789861 is 16898732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13645636 + 10144225 = 3694^2 + 3185^2 .

It is a cyclic number.

It is not a de Polignac number, because 23789861 - 2¹⁰ = 23788837 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23789867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11894930 + 11894931.

It is an arithmetic number, because the mean of its divisors is an integer number (11894931).

Almost surely, 2^23789861 is an apocalyptic number.

It is an amenable number.

23789861 is a deficient number, since it is larger than the sum of its proper divisors (1).

23789861 is an equidigital number, since it uses as much as digits as its factorization.

23789861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The square root of 23789861 is about 4877.4851101772. The cubic root of 23789861 is about 287.6055758444.

The spelling of 23789861 in words is "twenty-three million, seven hundred eighty-nine thousand, eight hundred sixty-one".