4945509 has 8 divisors (see below), whose sum is σ = 7326720. Its totient is φ = 3296988.

The previous prime is 4945477. The next prime is 4945511. The reversal of 4945509 is 9055494.

It is not a de Polignac number, because 4945509 - 2⁵ = 4945477 is a prime.

4945509 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4945519) 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 7 ways as a sum of consecutive naturals, for example, 91557 + ... + 91610.

It is an arithmetic number, because the mean of its divisors is an integer number (915840).

Almost surely, 2^4945509 is an apocalyptic number.

It is an amenable number.

4945509 is a deficient number, since it is larger than the sum of its proper divisors (2381211).

4945509 is a wasteful number, since it uses less digits than its factorization.

4945509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183176 (or 183170 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 4945509 is about 2223.8500399083. The cubic root of 4945509 is about 170.3741356300.

The spelling of 4945509 in words is "four million, nine hundred forty-five thousand, five hundred nine".