409471 has 2 divisors, whose sum is σ = 409472. Its totient is φ = 409470.

The previous prime is 409463. The next prime is 409477. The reversal of 409471 is 174904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409471 - 2³ = 409463 is a prime.

It is a super-3 number, since 3×409471³ = 205963708069182333, which contains 333 as substring.

409471 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204735 + 204736.

It is an arithmetic number, because the mean of its divisors is an integer number (204736).

2⁴⁰⁹⁴⁷¹ is an apocalyptic number.

409471 is a deficient number, since it is larger than the sum of its proper divisors (1).

409471 is an equidigital number, since it uses as much as digits as its factorization.

409471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 409471 is about 639.8992108137. The cubic root of 409471 is about 74.2576241004.

The spelling of 409471 in words is "four hundred nine thousand, four hundred seventy-one".