445440141 has 28 divisors (see below), whose sum is σ = 669663612. Its totient is φ = 296156736.

The previous prime is 445440133. The next prime is 445440173. The reversal of 445440141 is 141044544.

It can be written as a sum of positive squares in 2 ways, for example, as 77951241 + 367488900 = 8829^2 + 19170^2 .

It is not a de Polignac number, because 445440141 - 2³ = 445440133 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445440101) 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 27 ways as a sum of consecutive naturals, for example, 405505 + ... + 406601.

Almost surely, 2^445440141 is an apocalyptic number.

It is an amenable number.

445440141 is a deficient number, since it is larger than the sum of its proper divisors (224223471).

445440141 is an equidigital number, since it uses as much as digits as its factorization.

445440141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672 (or 1657 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 445440141 is about 21105.4528736059. The cubic root of 445440141 is about 763.7122973309.

Adding to 445440141 its reverse (141044544), we get a palindrome (586484685).

The spelling of 445440141 in words is "four hundred forty-five million, four hundred forty thousand, one hundred forty-one".