4509149 has 2 divisors, whose sum is σ = 4509150. Its totient is φ = 4509148.

The previous prime is 4509143. The next prime is 4509161. The reversal of 4509149 is 9419054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2280100 + 2229049 = 1510^2 + 1493^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4509149 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4509143) 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, 2254574 + 2254575.

It is an arithmetic number, because the mean of its divisors is an integer number (2254575).

Almost surely, 2^4509149 is an apocalyptic number.

It is an amenable number.

4509149 is a deficient number, since it is larger than the sum of its proper divisors (1).

4509149 is an equidigital number, since it uses as much as digits as its factorization.

4509149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 4509149 is about 2123.4756885823. The cubic root of 4509149 is about 165.2081731207.

The spelling of 4509149 in words is "four million, five hundred nine thousand, one hundred forty-nine".