409023 has 8 divisors (see below), whose sum is σ = 606000. Its totient is φ = 272664.

The previous prime is 409021. The next prime is 409027. The reversal of 409023 is 320904.

It is not a de Polignac number, because 409023 - 2¹ = 409021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 408987 and 409005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7548 + ... + 7601.

It is an arithmetic number, because the mean of its divisors is an integer number (75750).

2⁴⁰⁹⁰²³ is an apocalyptic number.

409023 is a deficient number, since it is larger than the sum of its proper divisors (196977).

409023 is a wasteful number, since it uses less digits than its factorization.

409023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15158 (or 15152 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 409023 is about 639.5490598852. The cubic root of 409023 is about 74.2305325966.

Adding to 409023 its reverse (320904), we get a palindrome (729927).

The spelling of 409023 in words is "four hundred nine thousand, twenty-three".