4439491778 has 8 divisors (see below), whose sum is σ = 7009723920. Its totient is φ = 2102917140.

The previous prime is 4439491751. The next prime is 4439491781. The reversal of 4439491778 is 8771949344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon 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, 58414328 + ... + 58414403.

It is an arithmetic number, because the mean of its divisors is an integer number (876215490).

Almost surely, 2^4439491778 is an apocalyptic number.

4439491778 is a deficient number, since it is larger than the sum of its proper divisors (2570232142).

4439491778 is a wasteful number, since it uses less digits than its factorization.

4439491778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116828752.

The product of its digits is 6096384, while the sum is 56.

The square root of 4439491778 is about 66629.5113144318. The cubic root of 4439491778 is about 1643.5304396066.

The spelling of 4439491778 in words is "four billion, four hundred thirty-nine million, four hundred ninety-one thousand, seven hundred seventy-eight".