405036423 has 32 divisors (see below), whose sum is σ = 658471680. Its totient is φ = 244026720.

The previous prime is 405036413. The next prime is 405036473. The reversal of 405036423 is 324630504.

It is not a de Polignac number, because 405036423 - 2¹⁴ = 405020039 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405036403) 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 31 ways as a sum of consecutive naturals, for example, 47440 + ... + 55322.

It is an arithmetic number, because the mean of its divisors is an integer number (20577240).

Almost surely, 2^405036423 is an apocalyptic number.

405036423 is a deficient number, since it is larger than the sum of its proper divisors (253435257).

405036423 is a wasteful number, since it uses less digits than its factorization.

405036423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8076 (or 8070 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 405036423 is about 20125.5167138635. The cubic root of 405036423 is about 739.8858011015.

Adding to 405036423 its reverse (324630504), we get a palindrome (729666927).

The spelling of 405036423 in words is "four hundred five million, thirty-six thousand, four hundred twenty-three".