6749399689 has 8 divisors (see below), whose sum is σ = 6791960448. Its totient is φ = 6706864800.

The previous prime is 6749399663. The next prime is 6749399693. The reversal of 6749399689 is 9869939476.

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 6749399689 - 2¹³ = 6749391497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6749399989) 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, 965284 + ... + 972250.

It is an arithmetic number, because the mean of its divisors is an integer number (848995056).

Almost surely, 2^6749399689 is an apocalyptic number.

It is an amenable number.

6749399689 is a deficient number, since it is larger than the sum of its proper divisors (42560759).

6749399689 is a wasteful number, since it uses less digits than its factorization.

6749399689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12935.

The product of its digits is 158723712, while the sum is 70.

The square root of 6749399689 is about 82154.7301681407. The cubic root of 6749399689 is about 1889.8255476654.

The spelling of 6749399689 in words is "six billion, seven hundred forty-nine million, three hundred ninety-nine thousand, six hundred eighty-nine".