23684789 has 2 divisors, whose sum is σ = 23684790. Its totient is φ = 23684788.

The previous prime is 23684741. The next prime is 23684807. The reversal of 23684789 is 98748632.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21464689 + 2220100 = 4633^2 + 1490^2 .

It is a cyclic number.

It is not a de Polignac number, because 23684789 - 2¹² = 23680693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23684189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11842394 + 11842395.

It is an arithmetic number, because the mean of its divisors is an integer number (11842395).

Almost surely, 2^23684789 is an apocalyptic number.

It is an amenable number.

23684789 is a deficient number, since it is larger than the sum of its proper divisors (1).

23684789 is an equidigital number, since it uses as much as digits as its factorization.

23684789 is an evil number, because the sum of its binary digits is even.

The product of its digits is 580608, while the sum is 47.

The square root of 23684789 is about 4866.7020660813. The cubic root of 23684789 is about 287.1815311626.

The spelling of 23684789 in words is "twenty-three million, six hundred eighty-four thousand, seven hundred eighty-nine".