5409509 has 16 divisors (see below), whose sum is σ = 6595200. Its totient is φ = 4333824.

The previous prime is 5409493. The next prime is 5409517. The reversal of 5409509 is 9059045.

It is not a de Polignac number, because 5409509 - 2⁴ = 5409493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5409539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11609 + ... + 12065.

It is an arithmetic number, because the mean of its divisors is an integer number (412200).

Almost surely, 2^5409509 is an apocalyptic number.

It is an amenable number.

5409509 is a deficient number, since it is larger than the sum of its proper divisors (1185691).

5409509 is a wasteful number, since it uses less digits than its factorization.

5409509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 572.

The product of its (nonzero) digits is 8100, while the sum is 32.

The square root of 5409509 is about 2325.8351188337. The cubic root of 5409509 is about 175.5439834782.

The spelling of 5409509 in words is "five million, four hundred nine thousand, five hundred nine".