6379936749 has 12 divisors (see below), whose sum is σ = 9757550556. Its totient is φ = 4003097472.

The previous prime is 6379936727. The next prime is 6379936757. The reversal of 6379936749 is 9476399736.

It can be written as a sum of positive squares in 2 ways, for example, as 5967562500 + 412374249 = 77250^2 + 20307^2 .

It is not a de Polignac number, because 6379936749 - 2¹⁶ = 6379871213 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 (6379936049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20849314 + ... + 20849619.

It is an arithmetic number, because the mean of its divisors is an integer number (813129213).

Almost surely, 2^6379936749 is an apocalyptic number.

It is an amenable number.

6379936749 is a deficient number, since it is larger than the sum of its proper divisors (3377613807).

6379936749 is a wasteful number, since it uses less digits than its factorization.

6379936749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41698956 (or 41698953 counting only the distinct ones).

The product of its digits is 46294416, while the sum is 63.

The square root of 6379936749 is about 79874.5062519951. The cubic root of 6379936749 is about 1854.6933908615.

The spelling of 6379936749 in words is "six billion, three hundred seventy-nine million, nine hundred thirty-six thousand, seven hundred forty-nine".