9409509 has 12 divisors (see below), whose sum is σ = 13622752. Its totient is φ = 6258600.

The previous prime is 9409489. The next prime is 9409529. The reversal of 9409509 is 9059049.

It is an interprime number because it is at equal distance from previous prime (9409489) and next prime (9409529).

It is not a de Polignac number, because 9409509 - 2¹⁹ = 8885221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9409529) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4224 + ... + 6054.

Almost surely, 2^9409509 is an apocalyptic number.

It is an amenable number.

9409509 is a deficient number, since it is larger than the sum of its proper divisors (4213243).

9409509 is a wasteful number, since it uses less digits than its factorization.

9409509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2408 (or 2405 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 9409509 is about 3067.4922982788. The cubic root of 9409509 is about 211.1165696855.

The spelling of 9409509 in words is "nine million, four hundred nine thousand, five hundred nine".