4445406064 has 20 divisors (see below), whose sum is σ = 9395972280. Its totient is φ = 2020639040.

The previous prime is 4445406023. The next prime is 4445406083. The reversal of 4445406064 is 4606045444.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12628819 + ... + 12629170.

It is an arithmetic number, because the mean of its divisors is an integer number (469798614).

Almost surely, 2^4445406064 is an apocalyptic number.

4445406064 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4445406064 is an abundant number, since it is smaller than the sum of its proper divisors (4950566216).

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

4445406064 is a wasteful number, since it uses less digits than its factorization.

4445406064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25258008 (or 25258002 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 37.

The square root of 4445406064 is about 66673.8784232626. The cubic root of 4445406064 is about 1644.2599522239.

The spelling of 4445406064 in words is "four billion, four hundred forty-five million, four hundred six thousand, sixty-four".