406829 has 4 divisors (see below), whose sum is σ = 412476. Its totient is φ = 401184.

The previous prime is 406817. The next prime is 406837. The reversal of 406829 is 928604.

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

It can be written as a sum of positive squares in 2 ways, for example, as 104329 + 302500 = 323^2 + 550^2 .

It is a cyclic number.

It is not a de Polignac number, because 406829 - 2⁸ = 406573 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 (406859) 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, 2714 + ... + 2859.

It is an arithmetic number, because the mean of its divisors is an integer number (103119).

2⁴⁰⁶⁸²⁹ is an apocalyptic number.

It is an amenable number.

406829 is a deficient number, since it is larger than the sum of its proper divisors (5647).

406829 is an equidigital number, since it uses as much as digits as its factorization.

406829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5646.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 406829 is about 637.8314824466. The cubic root of 406829 is about 74.0975703456.

The spelling of 406829 in words is "four hundred six thousand, eight hundred twenty-nine".