6328879749 has 12 divisors (see below), whose sum is σ = 9143241900. Its totient is φ = 4218548544.

The previous prime is 6328879723. The next prime is 6328879769. The reversal of 6328879749 is 9479788236.

It can be written as a sum of positive squares in 2 ways, for example, as 5389028100 + 939851649 = 73410^2 + 30657^2 .

It is not a de Polignac number, because 6328879749 - 2⁵ = 6328879717 is a prime.

It is a super-3 number, since 3×6328879749³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6328879769) 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, 1407 + ... + 112515.

It is an arithmetic number, because the mean of its divisors is an integer number (761936825).

Almost surely, 2^6328879749 is an apocalyptic number.

It is an amenable number.

6328879749 is a deficient number, since it is larger than the sum of its proper divisors (2814362151).

6328879749 is a wasteful number, since it uses less digits than its factorization.

6328879749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117444 (or 117441 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The square root of 6328879749 is about 79554.2566365873. The cubic root of 6328879749 is about 1849.7325884728.

The spelling of 6328879749 in words is "six billion, three hundred twenty-eight million, eight hundred seventy-nine thousand, seven hundred forty-nine".