4445438020 has 12 divisors (see below), whose sum is σ = 9335419884. Its totient is φ = 1778175200.

The previous prime is 4445437991. The next prime is 4445438021. The reversal of 4445438020 is 208345444.

It can be written as a sum of positive squares in 2 ways, for example, as 2029322304 + 2416115716 = 45048^2 + 49154^2 .

It is not an unprimeable number, because it can be changed into a prime (4445438021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 111135931 + ... + 111135970.

It is an arithmetic number, because the mean of its divisors is an integer number (777951657).

Almost surely, 2^4445438020 is an apocalyptic number.

It is an amenable number.

4445438020 is an abundant number, since it is smaller than the sum of its proper divisors (4889981864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4445438020 is a wasteful number, since it uses less digits than its factorization.

4445438020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222271910 (or 222271908 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 34.

The square root of 4445438020 is about 66674.1180669081. The cubic root of 4445438020 is about 1644.2638921599.

The spelling of 4445438020 in words is "four billion, four hundred forty-five million, four hundred thirty-eight thousand, twenty".