405322423 has 4 divisors (see below), whose sum is σ = 442169928. Its totient is φ = 368474920.

The previous prime is 405322367. The next prime is 405322441. The reversal of 405322423 is 324223504.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 405322423 - 2¹⁷ = 405191351 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 (405322453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18423736 + ... + 18423757.

It is an arithmetic number, because the mean of its divisors is an integer number (110542482).

Almost surely, 2^405322423 is an apocalyptic number.

405322423 is a deficient number, since it is larger than the sum of its proper divisors (36847505).

405322423 is a wasteful number, since it uses less digits than its factorization.

405322423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36847504.

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 405322423 is about 20132.6208676367. The cubic root of 405322423 is about 740.0599068862.

Adding to 405322423 its reverse (324223504), we get a palindrome (729545927).

The spelling of 405322423 in words is "four hundred five million, three hundred twenty-two thousand, four hundred twenty-three".