405529 has 2 divisors, whose sum is σ = 405530. Its totient is φ = 405528.

The previous prime is 405527. The next prime is 405541. The reversal of 405529 is 925504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403225 + 2304 = 635^2 + 48^2 .

It is a cyclic number.

It is not a de Polignac number, because 405529 - 2¹ = 405527 is a prime.

Together with 405527, it forms a pair of twin primes.

It is a plaindrome in base 13.

It is not a weakly prime, because it can be changed into another prime (405521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202764 + 202765.

It is an arithmetic number, because the mean of its divisors is an integer number (202765).

2⁴⁰⁵⁵²⁹ is an apocalyptic number.

It is an amenable number.

405529 is a deficient number, since it is larger than the sum of its proper divisors (1).

405529 is an equidigital number, since it uses as much as digits as its factorization.

405529 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 405529 is about 636.8115890905. The cubic root of 405529 is about 74.0185612071.

Subtracting from 405529 its sum of digits (25), we obtain a palindrome (405504).

The spelling of 405529 in words is "four hundred five thousand, five hundred twenty-nine".