405345005 has 16 divisors (see below), whose sum is σ = 524361600. Its totient is φ = 299028288.

The previous prime is 405344999. The next prime is 405345013. The reversal of 405345005 is 500543504.

It is not a de Polignac number, because 405345005 - 2²⁰ = 404296429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 76946 + ... + 82044.

It is an arithmetic number, because the mean of its divisors is an integer number (32772600).

Almost surely, 2^405345005 is an apocalyptic number.

It is an amenable number.

405345005 is a deficient number, since it is larger than the sum of its proper divisors (119016595).

405345005 is a wasteful number, since it uses less digits than its factorization.

405345005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6340.

The product of its (nonzero) digits is 6000, while the sum is 26.

The square root of 405345005 is about 20133.1816909300. The cubic root of 405345005 is about 740.0736504489.

Adding to 405345005 its reverse (500543504), we get a palindrome (905888509).

The spelling of 405345005 in words is "four hundred five million, three hundred forty-five thousand, five".