4446640336 has 20 divisors (see below), whose sum is σ = 8629719364. Its totient is φ = 2219616000.

The previous prime is 4446640307. The next prime is 4446640381. The reversal of 4446640336 is 6330466444.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2436014736 + 2010625600 = 49356^2 + 44840^2 .

It is a super-2 number, since 2×4446640336² = 39545220555484385792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 221595 + ... + 240826.

Almost surely, 2^4446640336 is an apocalyptic number.

It is an amenable number.

4446640336 is a deficient number, since it is larger than the sum of its proper divisors (4183079028).

4446640336 is a wasteful number, since it uses less digits than its factorization.

4446640336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463030 (or 463024 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

The square root of 4446640336 is about 66683.1338195799. The cubic root of 4446640336 is about 1644.4121150179.

The spelling of 4446640336 in words is "four billion, four hundred forty-six million, six hundred forty thousand, three hundred thirty-six".