405727423 has 4 divisors (see below), whose sum is σ = 429593760. Its totient is φ = 381861088.

The previous prime is 405727417. The next prime is 405727433. The reversal of 405727423 is 324727504.

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 405727423 - 2⁵ = 405727391 is a prime.

It is a super-2 number, since 2×405727423² = 329229483548441858, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405727433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11933143 + ... + 11933176.

It is an arithmetic number, because the mean of its divisors is an integer number (107398440).

Almost surely, 2^405727423 is an apocalyptic number.

405727423 is a deficient number, since it is larger than the sum of its proper divisors (23866337).

405727423 is a wasteful number, since it uses less digits than its factorization.

405727423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23866336.

The product of its (nonzero) digits is 47040, while the sum is 34.

The square root of 405727423 is about 20142.6766592725. The cubic root of 405727423 is about 740.3063152367.

The spelling of 405727423 in words is "four hundred five million, seven hundred twenty-seven thousand, four hundred twenty-three".