445644404 has 6 divisors (see below), whose sum is σ = 779877714. Its totient is φ = 222822200.

The previous prime is 445644401. The next prime is 445644431. The reversal of 445644404 is 404446544.

It can be written as a sum of positive squares in only one way, i.e., 433056100 + 12588304 = 20810^2 + 3548^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445644401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55705547 + ... + 55705554.

It is an arithmetic number, because the mean of its divisors is an integer number (129979619).

Almost surely, 2^445644404 is an apocalyptic number.

It is an amenable number.

445644404 is a deficient number, since it is larger than the sum of its proper divisors (334233310).

445644404 is a wasteful number, since it uses less digits than its factorization.

445644404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111411105 (or 111411103 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 35.

The square root of 445644404 is about 21110.2914238530. The cubic root of 445644404 is about 763.8290165872.

The spelling of 445644404 in words is "four hundred forty-five million, six hundred forty-four thousand, four hundred four".