406471 has 4 divisors (see below), whose sum is σ = 437752. Its totient is φ = 375192.

The previous prime is 406447. The next prime is 406481. The reversal of 406471 is 174604.

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 406471 - 2⁹ = 405959 is a prime.

It is a super-3 number, since 3×406471³ = 201469798724475333, which contains 333 as substring.

It is a Duffinian number.

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 (406481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15621 + ... + 15646.

It is an arithmetic number, because the mean of its divisors is an integer number (109438).

2⁴⁰⁶⁴⁷¹ is an apocalyptic number.

406471 is a deficient number, since it is larger than the sum of its proper divisors (31281).

406471 is a wasteful number, since it uses less digits than its factorization.

406471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31280.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 406471 is about 637.5507822911. The cubic root of 406471 is about 74.0758292578.

It can be divided in two parts, 40 and 6471, that multiplied together give a triangular number (258840 = T₇₁₉).

The spelling of 406471 in words is "four hundred six thousand, four hundred seventy-one".