405040564 has 24 divisors (see below), whose sum is σ = 750324960. Its totient is φ = 190987104.

The previous prime is 405040561. The next prime is 405040583. The reversal of 405040564 is 465040504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405040561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35614 + ... + 45589.

It is an arithmetic number, because the mean of its divisors is an integer number (31263540).

Almost surely, 2^405040564 is an apocalyptic number.

It is an amenable number.

405040564 is a deficient number, since it is larger than the sum of its proper divisors (345284396).

405040564 is a wasteful number, since it uses less digits than its factorization.

405040564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81279 (or 81277 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 405040564 is about 20125.6195929467. The cubic root of 405040564 is about 739.8883225675. Note that the first 3 decimals are identical.

The spelling of 405040564 in words is "four hundred five million, forty thousand, five hundred sixty-four".