3009745 has 4 divisors (see below), whose sum is σ = 3611700. Its totient is φ = 2407792.

The previous prime is 3009719. The next prime is 3009749. The reversal of 3009745 is 5479003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5479003 = 643 ⋅8521.

It can be written as a sum of positive squares in 2 ways, for example, as 1806336 + 1203409 = 1344^2 + 1097^2 .

It is a cyclic number.

It is not a de Polignac number, because 3009745 - 2⁹ = 3009233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3009749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 300970 + ... + 300979.

It is an arithmetic number, because the mean of its divisors is an integer number (902925).

Almost surely, 2^3009745 is an apocalyptic number.

It is an amenable number.

3009745 is a deficient number, since it is larger than the sum of its proper divisors (601955).

3009745 is an equidigital number, since it uses as much as digits as its factorization.

3009745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601954.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3009745 is about 1734.8616659550. The cubic root of 3009745 is about 144.3809518232.

The spelling of 3009745 in words is "three million, nine thousand, seven hundred forty-five".