3105749 has 2 divisors, whose sum is σ = 3105750. Its totient is φ = 3105748.

The previous prime is 3105719. The next prime is 3105763. The reversal of 3105749 is 9475013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2640625 + 465124 = 1625^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 3105749 - 2¹² = 3101653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3105719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1552874 + 1552875.

It is an arithmetic number, because the mean of its divisors is an integer number (1552875).

Almost surely, 2^3105749 is an apocalyptic number.

It is an amenable number.

3105749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3105749 is an equidigital number, since it uses as much as digits as its factorization.

3105749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 29.

The square root of 3105749 is about 1762.3135362358. The cubic root of 3105749 is about 145.9000535699.

The spelling of 3105749 in words is "three million, one hundred five thousand, seven hundred forty-nine".