4438447378 has 8 divisors (see below), whose sum is σ = 6663902220. Its totient is φ = 2217146640.

The previous prime is 4438447373. The next prime is 4438447381. The reversal of 4438447378 is 8737448344.

It can be written as a sum of positive squares in 2 ways, for example, as 4435160409 + 3286969 = 66597^2 + 1813^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4438447373) 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, 1035853 + ... + 1040128.

Almost surely, 2^4438447378 is an apocalyptic number.

4438447378 is a deficient number, since it is larger than the sum of its proper divisors (2225454842).

4438447378 is a wasteful number, since it uses less digits than its factorization.

4438447378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2077052.

The product of its digits is 7225344, while the sum is 52.

The square root of 4438447378 is about 66621.6734854357. The cubic root of 4438447378 is about 1643.4015481405.

The spelling of 4438447378 in words is "four billion, four hundred thirty-eight million, four hundred forty-seven thousand, three hundred seventy-eight".