6839215379 has 4 divisors (see below), whose sum is σ = 7241522184. Its totient is φ = 6436908576.

The previous prime is 6839215351. The next prime is 6839215441. The reversal of 6839215379 is 9735129386.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9735129386 = 2 ⋅4867564693.

It is a cyclic number.

It is not a de Polignac number, because 6839215379 - 2²⁸ = 6570779923 is a prime.

It is a super-2 number, since 2×6839215379² = 93549734000700227282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6839215379.

It is not an unprimeable number, because it can be changed into a prime (6839215879) 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, 201153377 + ... + 201153410.

It is an arithmetic number, because the mean of its divisors is an integer number (1810380546).

Almost surely, 2^6839215379 is an apocalyptic number.

6839215379 is a deficient number, since it is larger than the sum of its proper divisors (402306805).

6839215379 is a wasteful number, since it uses less digits than its factorization.

6839215379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402306804.

The product of its digits is 2449440, while the sum is 53.

The square root of 6839215379 is about 82699.5488439931. The cubic root of 6839215379 is about 1898.1714058821.

The spelling of 6839215379 in words is "six billion, eight hundred thirty-nine million, two hundred fifteen thousand, three hundred seventy-nine".