445601444 has 6 divisors (see below), whose sum is σ = 779802534. Its totient is φ = 222800720.

The previous prime is 445601423. The next prime is 445601447. The reversal of 445601444 is 444106544.

It can be written as a sum of positive squares in only one way, i.e., 253446400 + 192155044 = 15920^2 + 13862^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 445601444.

It is not an unprimeable number, because it can be changed into a prime (445601447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55700177 + ... + 55700184.

It is an arithmetic number, because the mean of its divisors is an integer number (129967089).

Almost surely, 2^445601444 is an apocalyptic number.

It is an amenable number.

445601444 is a deficient number, since it is larger than the sum of its proper divisors (334201090).

445601444 is a wasteful number, since it uses less digits than its factorization.

445601444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111400365 (or 111400363 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 32.

The square root of 445601444 is about 21109.2738861383. The cubic root of 445601444 is about 763.8044714949.

Adding to 445601444 its reverse (444106544), we get a palindrome (889707988).

The spelling of 445601444 in words is "four hundred forty-five million, six hundred one thousand, four hundred forty-four".