3878197439 has 8 divisors (see below), whose sum is σ = 4011673680. Its totient is φ = 3746229696.

The previous prime is 3878197409. The next prime is 3878197441. The reversal of 3878197439 is 9347918783.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3878197439 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 (3878197409) 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, 371894 + ... + 382179.

It is an arithmetic number, because the mean of its divisors is an integer number (501459210).

Almost surely, 2^3878197439 is an apocalyptic number.

3878197439 is a deficient number, since it is larger than the sum of its proper divisors (133476241).

3878197439 is a wasteful number, since it uses less digits than its factorization.

3878197439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754249.

The product of its digits is 9144576, while the sum is 59.

The square root of 3878197439 is about 62275.1751422668. The cubic root of 3878197439 is about 1571.1222234683.

The spelling of 3878197439 in words is "three billion, eight hundred seventy-eight million, one hundred ninety-seven thousand, four hundred thirty-nine".