405566441 has 16 divisors (see below), whose sum is σ = 473558400. Its totient is φ = 340124928.

The previous prime is 405566417. The next prime is 405566449. The reversal of 405566441 is 144665504.

It is a cyclic number.

It is not a de Polignac number, because 405566441 - 2²² = 401372137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (405566449) 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, 154145 + ... + 156753.

It is an arithmetic number, because the mean of its divisors is an integer number (29597400).

Almost surely, 2^405566441 is an apocalyptic number.

It is an amenable number.

405566441 is a deficient number, since it is larger than the sum of its proper divisors (67991959).

405566441 is a wasteful number, since it uses less digits than its factorization.

405566441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3088.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 405566441 is about 20138.6802199151. The cubic root of 405566441 is about 740.2083909079.

The spelling of 405566441 in words is "four hundred five million, five hundred sixty-six thousand, four hundred forty-one".