8378219439 has 12 divisors (see below), whose sum is σ = 12105412176. Its totient is φ = 5583845952.

The previous prime is 8378219413. The next prime is 8378219477. The reversal of 8378219439 is 9349128738.

It is not a de Polignac number, because 8378219439 - 2¹¹ = 8378217391 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8378219639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 103242 + ... + 165575.

It is an arithmetic number, because the mean of its divisors is an integer number (1008784348).

Almost surely, 2^8378219439 is an apocalyptic number.

8378219439 is a deficient number, since it is larger than the sum of its proper divisors (3727192737).

8378219439 is a wasteful number, since it uses less digits than its factorization.

8378219439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272286 (or 272283 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 54.

The square root of 8378219439 is about 91532.6140727992. The cubic root of 8378219439 is about 2031.0342339284.

The spelling of 8378219439 in words is "eight billion, three hundred seventy-eight million, two hundred nineteen thousand, four hundred thirty-nine".