4444662440 has 16 divisors (see below), whose sum is σ = 10000490580. Its totient is φ = 1777864960.

The previous prime is 4444662379. The next prime is 4444662487. The reversal of 4444662440 is 442664444.

It can be written as a sum of positive squares in 2 ways, for example, as 4422516004 + 22146436 = 66502^2 + 4706^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4444662394 and 4444662403.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55558241 + ... + 55558320.

Almost surely, 2^4444662440 is an apocalyptic number.

4444662440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4444662440 is an abundant number, since it is smaller than the sum of its proper divisors (5555828140).

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

4444662440 is a wasteful number, since it uses less digits than its factorization.

4444662440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111116572 (or 111116568 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

The square root of 4444662440 is about 66668.3016132855. The cubic root of 4444662440 is about 1644.1682636111.

The spelling of 4444662440 in words is "four billion, four hundred forty-four million, six hundred sixty-two thousand, four hundred forty".