6939994773 has 8 divisors (see below), whose sum is σ = 9265300128. Its totient is φ = 4620676304.

The previous prime is 6939994771. The next prime is 6939994783. The reversal of 6939994773 is 3774999396.

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

It is a cyclic number.

It is not a de Polignac number, because 6939994773 - 2¹ = 6939994771 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6939994771) 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, 1494015 + ... + 1498652.

It is an arithmetic number, because the mean of its divisors is an integer number (1158162516).

Almost surely, 2^6939994773 is an apocalyptic number.

It is an amenable number.

6939994773 is a deficient number, since it is larger than the sum of its proper divisors (2325305355).

6939994773 is a wasteful number, since it uses less digits than its factorization.

6939994773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993443.

The product of its digits is 69441624, while the sum is 66.

The square root of 6939994773 is about 83306.6310265876. The cubic root of 6939994773 is about 1907.4494956760.

The spelling of 6939994773 in words is "six billion, nine hundred thirty-nine million, nine hundred ninety-four thousand, seven hundred seventy-three".