8409375 has 72 divisors (see below), whose sum is σ = 17061408. Its totient is φ = 3960000.

The previous prime is 8409353. The next prime is 8409377. The reversal of 8409375 is 5739048.

It is not a de Polignac number, because 8409375 - 2⁸ = 8409119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8409377) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 365614 + ... + 365636.

It is an arithmetic number, because the mean of its divisors is an integer number (236964).

Almost surely, 2^8409375 is an apocalyptic number.

8409375 is an abundant number, since it is smaller than the sum of its proper divisors (8652033).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8409375 is a wasteful number, since it uses less digits than its factorization.

8409375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67 (or 44 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 8409375 is about 2899.8922393772. The cubic root of 8409375 is about 203.3548679751.

The spelling of 8409375 in words is "eight million, four hundred nine thousand, three hundred seventy-five".