409487 has 6 divisors (see below), whose sum is σ = 443592. Its totient is φ = 377832.

The previous prime is 409483. The next prime is 409499. The reversal of 409487 is 784904.

It is a happy number.

It is not a de Polignac number, because 409487 - 2² = 409483 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1043 + ... + 1380.

It is an arithmetic number, because the mean of its divisors is an integer number (73932).

2⁴⁰⁹⁴⁸⁷ is an apocalyptic number.

409487 is a deficient number, since it is larger than the sum of its proper divisors (34105).

409487 is a wasteful number, since it uses less digits than its factorization.

409487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449 (or 2436 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 409487 is about 639.9117126604. The cubic root of 409487 is about 74.2585912886.

The spelling of 409487 in words is "four hundred nine thousand, four hundred eighty-seven".