3000749 has 4 divisors (see below), whose sum is σ = 3073980. Its totient is φ = 2927520.

The previous prime is 3000743. The next prime is 3000757. The reversal of 3000749 is 9470003.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9470003 = 17 ⋅557059.

It can be written as a sum of positive squares in 2 ways, for example, as 1643524 + 1357225 = 1282^2 + 1165^2 .

It is a cyclic number.

It is not a de Polignac number, because 3000749 - 2⁴ = 3000733 is a prime.

It is a super-2 number, since 2×3000749² = 18008989122002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3000743) 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, 36554 + ... + 36635.

It is an arithmetic number, because the mean of its divisors is an integer number (768495).

Almost surely, 2^3000749 is an apocalyptic number.

It is an amenable number.

3000749 is a deficient number, since it is larger than the sum of its proper divisors (73231).

3000749 is an equidigital number, since it uses as much as digits as its factorization.

3000749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73230.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 3000749 is about 1732.2670117508. The cubic root of 3000749 is about 144.2369587534.

The spelling of 3000749 in words is "three million, seven hundred forty-nine", and thus it is an aban number.