400270605 has 32 divisors (see below), whose sum is σ = 755539968. Its totient is φ = 177076800.

The previous prime is 400270601. The next prime is 400270697. The reversal of 400270605 is 506072004.

It is a happy number.

It is not a de Polignac number, because 400270605 - 2² = 400270601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400270601) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 58231 + ... + 64740.

It is an arithmetic number, because the mean of its divisors is an integer number (23610624).

Almost surely, 2^400270605 is an apocalyptic number.

It is an amenable number.

400270605 is a deficient number, since it is larger than the sum of its proper divisors (355269363).

400270605 is a wasteful number, since it uses less digits than its factorization.

400270605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123017.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 400270605 is about 20006.7639812140. The cubic root of 400270605 is about 736.9724151646.

The spelling of 400270605 in words is "four hundred million, two hundred seventy thousand, six hundred five".