408655385 has 16 divisors (see below), whose sum is σ = 509230800. Its totient is φ = 314447616.

The previous prime is 408655381. The next prime is 408655391. The reversal of 408655385 is 583556804.

408655385 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 13957696 + 394697689 = 3736^2 + 19867^2 .

It is a cyclic number.

It is not a de Polignac number, because 408655385 - 2² = 408655381 is a prime.

It is not an unprimeable number, because it can be changed into a prime (408655381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33767 + ... + 44243.

It is an arithmetic number, because the mean of its divisors is an integer number (31826925).

Almost surely, 2^408655385 is an apocalyptic number.

It is an amenable number.

408655385 is a deficient number, since it is larger than the sum of its proper divisors (100575415).

408655385 is a wasteful number, since it uses less digits than its factorization.

408655385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10780.

The product of its (nonzero) digits is 576000, while the sum is 44.

The square root of 408655385 is about 20215.2265631627. The cubic root of 408655385 is about 742.0828736297.

The spelling of 408655385 in words is "four hundred eight million, six hundred fifty-five thousand, three hundred eighty-five".