409087 has 4 divisors (see below), whose sum is σ = 467536. Its totient is φ = 350640.

The previous prime is 409081. The next prime is 409099. The reversal of 409087 is 780904.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 409087 - 2⁷ = 408959 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 (409081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29214 + ... + 29227.

It is an arithmetic number, because the mean of its divisors is an integer number (116884).

2⁴⁰⁹⁰⁸⁷ is an apocalyptic number.

409087 is a deficient number, since it is larger than the sum of its proper divisors (58449).

409087 is an equidigital number, since it uses as much as digits as its factorization.

409087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58448.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 409087 is about 639.5990931826. The cubic root of 409087 is about 74.2344040222.

The spelling of 409087 in words is "four hundred nine thousand, eighty-seven".