6939657219 has 12 divisors (see below), whose sum is σ = 10170517448. Its totient is φ = 4205852640.

The previous prime is 6939657217. The next prime is 6939657229. The reversal of 6939657219 is 9127569396.

6939657219 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6939657219 - 2¹ = 6939657217 is a prime.

It is a super-2 number, since 2×6939657219² = 96317684634437627922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6939657217) 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, 9558394 + ... + 9559119.

Almost surely, 2^6939657219 is an apocalyptic number.

6939657219 is a deficient number, since it is larger than the sum of its proper divisors (3230860229).

6939657219 is a wasteful number, since it uses less digits than its factorization.

6939657219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19117538 (or 19117527 counting only the distinct ones).

The product of its digits is 5511240, while the sum is 57.

The square root of 6939657219 is about 83304.6050287738. The cubic root of 6939657219 is about 1907.4185697331.

The spelling of 6939657219 in words is "six billion, nine hundred thirty-nine million, six hundred fifty-seven thousand, two hundred nineteen".