3098749 has 2 divisors, whose sum is σ = 3098750. Its totient is φ = 3098748.

The previous prime is 3098747. The next prime is 3098759. The reversal of 3098749 is 9478903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2913849 + 184900 = 1707^2 + 430^2 .

It is a cyclic number.

It is not a de Polignac number, because 3098749 - 2¹ = 3098747 is a prime.

Together with 3098747, it forms a pair of twin primes.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

3098749 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3098741) 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 as a sum of consecutive naturals, namely, 1549374 + 1549375.

It is an arithmetic number, because the mean of its divisors is an integer number (1549375).

Almost surely, 2^3098749 is an apocalyptic number.

It is an amenable number.

3098749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3098749 is an equidigital number, since it uses as much as digits as its factorization.

3098749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 3098749 is about 1760.3263901902. The cubic root of 3098749 is about 145.7903571505.

The spelling of 3098749 in words is "three million, ninety-eight thousand, seven hundred forty-nine".