3847447378 has 16 divisors (see below), whose sum is σ = 6120219384. Its totient is φ = 1807728640.

The previous prime is 3847447343. The next prime is 3847447379. The reversal of 3847447378 is 8737447483.

3847447378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3628496169 + 218951209 = 60237^2 + 14797^2 .

It is not an unprimeable number, because it can be changed into a prime (3847447379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66475 + ... + 110062.

Almost surely, 2^3847447378 is an apocalyptic number.

3847447378 is a deficient number, since it is larger than the sum of its proper divisors (2272772006).

3847447378 is a wasteful number, since it uses less digits than its factorization.

3847447378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177197.

The product of its digits is 12644352, while the sum is 55.

The square root of 3847447378 is about 62027.7952050530. The cubic root of 3847447378 is about 1566.9587464384.

The spelling of 3847447378 in words is "three billion, eight hundred forty-seven million, four hundred forty-seven thousand, three hundred seventy-eight".