400313005 has 8 divisors (see below), whose sum is σ = 480590712. Its totient is φ = 320107008.

The previous prime is 400312967. The next prime is 400313029. The reversal of 400313005 is 500313004.

It can be written as a sum of positive squares in 4 ways, for example, as 1671849 + 398641156 = 1293^2 + 19966^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400313005 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400313005.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4764 + ... + 28693.

It is an arithmetic number, because the mean of its divisors is an integer number (60073839).

Almost surely, 2^400313005 is an apocalyptic number.

It is an amenable number.

400313005 is a deficient number, since it is larger than the sum of its proper divisors (80277707).

400313005 is a wasteful number, since it uses less digits than its factorization.

400313005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35855.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 400313005 is about 20007.8235947841. The cubic root of 400313005 is about 736.9984363336.

Adding to 400313005 its reverse (500313004), we get a palindrome (900626009).

Subtracting 400313005 from its reverse (500313004), we obtain a palindrome (99999999).

The spelling of 400313005 in words is "four hundred million, three hundred thirteen thousand, five".