408065312 has 18 divisors (see below), whose sum is σ = 803603619. Its totient is φ = 203975520.

The previous prime is 408065311. The next prime is 408065347. The reversal of 408065312 is 213560804.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 204032656 + 204032656 = 14284^2 + 14284^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=14284.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408065311) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 112487 + ... + 116057.

Almost surely, 2^408065312 is an apocalyptic number.

It is an amenable number.

408065312 is a deficient number, since it is larger than the sum of its proper divisors (395538307).

408065312 is an frugal number, since it uses more digits than its factorization.

408065312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7152 (or 3573 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 408065312 is about 20200.6265249373. The cubic root of 408065312 is about 741.7255277164.

The spelling of 408065312 in words is "four hundred eight million, sixty-five thousand, three hundred twelve".