405445013 has 4 divisors (see below), whose sum is σ = 406165728. Its totient is φ = 404724300.

The previous prime is 405444973. The next prime is 405445031. The reversal of 405445013 is 310544504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 405445013 - 2⁸ = 405444757 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 (405415013) 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, 359513 + ... + 360638.

It is an arithmetic number, because the mean of its divisors is an integer number (101541432).

Almost surely, 2^405445013 is an apocalyptic number.

It is an amenable number.

405445013 is a deficient number, since it is larger than the sum of its proper divisors (720715).

405445013 is an equidigital number, since it uses as much as digits as its factorization.

405445013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720714.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 405445013 is about 20135.6651988456. The cubic root of 405445013 is about 740.1345098803.

Adding to 405445013 its reverse (310544504), we get a palindrome (715989517).

It can be divided in two parts, 40544501 and 3, that added together give a palindrome (40544504).

The spelling of 405445013 in words is "four hundred five million, four hundred forty-five thousand, thirteen".