12023749 has 2 divisors, whose sum is σ = 12023750. Its totient is φ = 12023748.

The previous prime is 12023729. The next prime is 12023773. The reversal of 12023749 is 94732021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11950849 + 72900 = 3457^2 + 270^2 .

It is an emirp because it is prime and its reverse (94732021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12023749 - 2⁵ = 12023717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12023729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6011874 + 6011875.

It is an arithmetic number, because the mean of its divisors is an integer number (6011875).

Almost surely, 2^12023749 is an apocalyptic number.

It is an amenable number.

12023749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12023749 is an equidigital number, since it uses as much as digits as its factorization.

12023749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12023749 is about 3467.5277936882. The cubic root of 12023749 is about 229.0937813101.

The spelling of 12023749 in words is "twelve million, twenty-three thousand, seven hundred forty-nine".