405543013 has 4 divisors (see below), whose sum is σ = 415434348. Its totient is φ = 395651680.

The previous prime is 405543001. The next prime is 405543029. The reversal of 405543013 is 310345504.

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

It can be written as a sum of positive squares in 2 ways, for example, as 20088324 + 385454689 = 4482^2 + 19633^2 .

It is a cyclic number.

It is not a de Polignac number, because 405543013 - 2¹³ = 405534821 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 (405543113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4945606 + ... + 4945687.

It is an arithmetic number, because the mean of its divisors is an integer number (103858587).

Almost surely, 2^405543013 is an apocalyptic number.

It is an amenable number.

405543013 is a deficient number, since it is larger than the sum of its proper divisors (9891335).

405543013 is an equidigital number, since it uses as much as digits as its factorization.

405543013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891334.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 405543013 is about 20138.0985447981. The cubic root of 405543013 is about 740.1941376444.

Adding to 405543013 its reverse (310345504), we get a palindrome (715888517).

The spelling of 405543013 in words is "four hundred five million, five hundred forty-three thousand, thirteen".