400115585 has 8 divisors (see below), whose sum is σ = 505409280. Its totient is φ = 303245424.

The previous prime is 400115579. The next prime is 400115627. The reversal of 400115585 is 585511004.

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

It is a cyclic number.

It is not a de Polignac number, because 400115585 - 2¹² = 400111489 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2105777 + ... + 2105966.

It is an arithmetic number, because the mean of its divisors is an integer number (63176160).

Almost surely, 2^400115585 is an apocalyptic number.

It is an amenable number.

400115585 is a deficient number, since it is larger than the sum of its proper divisors (105293695).

400115585 is a wasteful number, since it uses less digits than its factorization.

400115585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211767.

The product of its (nonzero) digits is 4000, while the sum is 29.

The square root of 400115585 is about 20002.8894162818. The cubic root of 400115585 is about 736.8772626901.

Adding to 400115585 its reverse (585511004), we get a palindrome (985626589).

The spelling of 400115585 in words is "four hundred million, one hundred fifteen thousand, five hundred eighty-five".