409504423 has 4 divisors (see below), whose sum is σ = 409882240. Its totient is φ = 409126608.

The previous prime is 409504421. The next prime is 409504457. The reversal of 409504423 is 324405904.

It is a happy number.

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 409504423 - 2¹ = 409504421 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 (409504421) 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, 187278 + ... + 189451.

It is an arithmetic number, because the mean of its divisors is an integer number (102470560).

Almost surely, 2^409504423 is an apocalyptic number.

409504423 is a deficient number, since it is larger than the sum of its proper divisors (377817).

409504423 is a wasteful number, since it uses less digits than its factorization.

409504423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377816.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 409504423 is about 20236.2156294106. The cubic root of 409504423 is about 742.5964446741.

The spelling of 409504423 in words is "four hundred nine million, five hundred four thousand, four hundred twenty-three".