23661929 has 2 divisors, whose sum is σ = 23661930. Its totient is φ = 23661928.

The previous prime is 23661919. The next prime is 23661947. The reversal of 23661929 is 92916632.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20720704 + 2941225 = 4552^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 23661929 - 2¹⁶ = 23596393 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 23661892 and 23661901.

It is not a weakly prime, because it can be changed into another prime (23661919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11830964 + 11830965.

It is an arithmetic number, because the mean of its divisors is an integer number (11830965).

Almost surely, 2^23661929 is an apocalyptic number.

It is an amenable number.

23661929 is a deficient number, since it is larger than the sum of its proper divisors (1).

23661929 is an equidigital number, since it uses as much as digits as its factorization.

23661929 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 23661929 is about 4864.3528860476. The cubic root of 23661929 is about 287.0891078067.

The spelling of 23661929 in words is "twenty-three million, six hundred sixty-one thousand, nine hundred twenty-nine".