400316605 has 16 divisors (see below), whose sum is σ = 544561920. Its totient is φ = 280058688.

The previous prime is 400316591. The next prime is 400316617. The reversal of 400316605 is 506613004.

It is not a de Polignac number, because 400316605 - 2⁹ = 400316093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400316605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160837 + ... + 163306.

It is an arithmetic number, because the mean of its divisors is an integer number (34035120).

Almost surely, 2^400316605 is an apocalyptic number.

It is an amenable number.

400316605 is a deficient number, since it is larger than the sum of its proper divisors (144245315).

400316605 is a wasteful number, since it uses less digits than its factorization.

400316605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324180.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 400316605 is about 20007.9135593894. The cubic root of 400316605 is about 737.0006455935. Note that the first 3 decimals are identical.

Adding to 400316605 its reverse (506613004), we get a palindrome (906929609).

The spelling of 400316605 in words is "four hundred million, three hundred sixteen thousand, six hundred five".