409429 has 2 divisors, whose sum is σ = 409430. Its totient is φ = 409428.

The previous prime is 409397. The next prime is 409433. The reversal of 409429 is 924904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 302500 + 106929 = 550^2 + 327^2 .

It is a cyclic number.

It is not a de Polignac number, because 409429 - 2⁵ = 409397 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 409397 and 409406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204714 + 204715.

It is an arithmetic number, because the mean of its divisors is an integer number (204715).

2⁴⁰⁹⁴²⁹ is an apocalyptic number.

It is an amenable number.

409429 is a deficient number, since it is larger than the sum of its proper divisors (1).

409429 is an equidigital number, since it uses as much as digits as its factorization.

409429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 409429 is about 639.8663923039. The cubic root of 409429 is about 74.2550851116.

It can be divided in two parts, 409 and 429, that added together give a palindrome (838).

The spelling of 409429 in words is "four hundred nine thousand, four hundred twenty-nine".