3047749 has 4 divisors (see below), whose sum is σ = 3075820. Its totient is φ = 3019680.

The previous prime is 3047731. The next prime is 3047767. The reversal of 3047749 is 9477403.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3047731) and next prime (3047767).

It can be written as a sum of positive squares in 2 ways, for example, as 1404225 + 1643524 = 1185^2 + 1282^2 .

It is a cyclic number.

It is not a de Polignac number, because 3047749 - 2⁹ = 3047237 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3047729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13872 + ... + 14089.

It is an arithmetic number, because the mean of its divisors is an integer number (768955).

Almost surely, 2^3047749 is an apocalyptic number.

It is an amenable number.

3047749 is a deficient number, since it is larger than the sum of its proper divisors (28071).

3047749 is a wasteful number, since it uses less digits than its factorization.

3047749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28070.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 3047749 is about 1745.7803412801. The cubic root of 3047749 is about 144.9861104413.

The spelling of 3047749 in words is "three million, forty-seven thousand, seven hundred forty-nine".