445405805 has 16 divisors (see below), whose sum is σ = 582543360. Its totient is φ = 324948288.

The previous prime is 445405801. The next prime is 445405811. The reversal of 445405805 is 508504544.

It is a cyclic number.

It is not a de Polignac number, because 445405805 - 2² = 445405801 is a prime.

It is a super-2 number, since 2×445405805² = 396772662255396050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445405801) 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, 35885 + ... + 46674.

It is an arithmetic number, because the mean of its divisors is an integer number (36408960).

Almost surely, 2^445405805 is an apocalyptic number.

It is an amenable number.

445405805 is a deficient number, since it is larger than the sum of its proper divisors (137137555).

445405805 is a wasteful number, since it uses less digits than its factorization.

445405805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82660.

The product of its (nonzero) digits is 64000, while the sum is 35.

The square root of 445405805 is about 21104.6394188576. The cubic root of 445405805 is about 763.6926736696.

The spelling of 445405805 in words is "four hundred forty-five million, four hundred five thousand, eight hundred five".