12023909 has 2 divisors, whose sum is σ = 12023910. Its totient is φ = 12023908.

The previous prime is 12023881. The next prime is 12023923. The reversal of 12023909 is 90932021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7963684 + 4060225 = 2822^2 + 2015^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12023909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12023929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011954 + 6011955.

It is an arithmetic number, because the mean of its divisors is an integer number (6011955).

Almost surely, 2^12023909 is an apocalyptic number.

It is an amenable number.

12023909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12023909 is an equidigital number, since it uses as much as digits as its factorization.

12023909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 12023909 is about 3467.5508648036. The cubic root of 12023909 is about 229.0947974891.

The spelling of 12023909 in words is "twelve million, twenty-three thousand, nine hundred nine".