3009749 has 2 divisors, whose sum is σ = 3009750. Its totient is φ = 3009748.

The previous prime is 3009719. The next prime is 3009751. The reversal of 3009749 is 9479003.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2829124 + 180625 = 1682^2 + 425^2 .

It is an emirp because it is prime and its reverse (9479003) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3009749 - 2²⁰ = 1961173 is a prime.

Together with 3009751, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3009709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1504874 + 1504875.

It is an arithmetic number, because the mean of its divisors is an integer number (1504875).

Almost surely, 2^3009749 is an apocalyptic number.

It is an amenable number.

3009749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3009749 is an equidigital number, since it uses as much as digits as its factorization.

3009749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 3009749 is about 1734.8628187842. The cubic root of 3009749 is about 144.3810157848.

The spelling of 3009749 in words is "three million, nine thousand, seven hundred forty-nine".