3878329447 has 4 divisors (see below), whose sum is σ = 3878816296. Its totient is φ = 3877842600.

The previous prime is 3878329439. The next prime is 3878329453. The reversal of 3878329447 is 7449238783.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3878329447 - 2³ = 3878329439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878329747) 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, 231273 + ... + 247474.

It is an arithmetic number, because the mean of its divisors is an integer number (969704074).

Almost surely, 2^3878329447 is an apocalyptic number.

3878329447 is a deficient number, since it is larger than the sum of its proper divisors (486849).

3878329447 is an equidigital number, since it uses as much as digits as its factorization.

3878329447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486848.

The product of its digits is 8128512, while the sum is 55.

The square root of 3878329447 is about 62276.2350098334. The cubic root of 3878329447 is about 1571.1400494775.

The spelling of 3878329447 in words is "three billion, eight hundred seventy-eight million, three hundred twenty-nine thousand, four hundred forty-seven".