409263 has 4 divisors (see below), whose sum is σ = 545688. Its totient is φ = 272840.

The previous prime is 409261. The next prime is 409267. The reversal of 409263 is 362904.

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 409263 - 2¹ = 409261 is a prime.

It is a D-number.

409263 is a lucky number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68208 + ... + 68213.

It is an arithmetic number, because the mean of its divisors is an integer number (136422).

2⁴⁰⁹²⁶³ is an apocalyptic number.

409263 is a deficient number, since it is larger than the sum of its proper divisors (136425).

409263 is a wasteful number, since it uses less digits than its factorization.

409263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136424.

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 409263 is about 639.7366645738. The cubic root of 409263 is about 74.2450483610.

The spelling of 409263 in words is "four hundred nine thousand, two hundred sixty-three".