4509549405 has 24 divisors (see below), whose sum is σ = 7838976600. Its totient is φ = 2398193280.

The previous prime is 4509549397. The next prime is 4509549427. The reversal of 4509549405 is 5049459054.

4509549405 is a `hidden beast` number, since 4 + 509 + 54 + 94 + 0 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1819363716 + 2690185689 = 42654^2 + 51867^2 .

It is not a de Polignac number, because 4509549405 - 2³ = 4509549397 is a prime.

It is a super-2 number, since 2×4509549405² = 40672071672271708050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 127866 + ... + 159275.

It is an arithmetic number, because the mean of its divisors is an integer number (326624025).

Almost surely, 2^4509549405 is an apocalyptic number.

4509549405 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4509549405 is a deficient number, since it is larger than the sum of its proper divisors (3329427195).

4509549405 is a wasteful number, since it uses less digits than its factorization.

4509549405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287501 (or 287498 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 45.

The square root of 4509549405 is about 67153.1786663893. The cubic root of 4509549405 is about 1652.1306304715.

The spelling of 4509549405 in words is "four billion, five hundred nine million, five hundred forty-nine thousand, four hundred five".