409975 has 18 divisors (see below), whose sum is σ = 548576. Its totient is φ = 303600.

The previous prime is 409967. The next prime is 409987. The reversal of 409975 is 579904.

It is not a de Polignac number, because 409975 - 2³ = 409967 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 409975.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 13210 + ... + 13240.

2⁴⁰⁹⁹⁷⁵ is an apocalyptic number.

409975 is a deficient number, since it is larger than the sum of its proper divisors (138601).

409975 is a wasteful number, since it uses less digits than its factorization.

409975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 409975 is about 640.2929017255. The cubic root of 409975 is about 74.2880784328.

The spelling of 409975 in words is "four hundred nine thousand, nine hundred seventy-five".