12905749 has 2 divisors, whose sum is σ = 12905750. Its totient is φ = 12905748.

The previous prime is 12905723. The next prime is 12905773. The reversal of 12905749 is 94750921.

12905749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12567025 + 338724 = 3545^2 + 582^2 .

It is an emirp because it is prime and its reverse (94750921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12905749 - 2¹⁷ = 12774677 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 (12905549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6452874 + 6452875.

It is an arithmetic number, because the mean of its divisors is an integer number (6452875).

Almost surely, 2^12905749 is an apocalyptic number.

It is an amenable number.

12905749 is a deficient number, since it is larger than the sum of its proper divisors (1).

12905749 is an equidigital number, since it uses as much as digits as its factorization.

12905749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 12905749 is about 3592.4572370454. The cubic root of 12905749 is about 234.5638446947.

The spelling of 12905749 in words is "twelve million, nine hundred five thousand, seven hundred forty-nine".