404005065 has 16 divisors (see below), whose sum is σ = 648045888. Its totient is φ = 214923456.

The previous prime is 404005033. The next prime is 404005067. The reversal of 404005065 is 560500404.

It is not a de Polignac number, because 404005065 - 2⁵ = 404005033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (404005067) 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, 27967 + ... + 39876.

It is an arithmetic number, because the mean of its divisors is an integer number (40502868).

Almost surely, 2^404005065 is an apocalyptic number.

It is an amenable number.

404005065 is a deficient number, since it is larger than the sum of its proper divisors (244040823).

404005065 is a wasteful number, since it uses less digits than its factorization.

404005065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68248.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 404005065 is about 20099.8772384311. The cubic root of 404005065 is about 739.2572685334.

Adding to 404005065 its reverse (560500404), we get a palindrome (964505469).

The spelling of 404005065 in words is "four hundred four million, five thousand, sixty-five".