6889347990 has 192 divisors, whose sum is σ = 21111667200. Its totient is φ = 1526211072.

The previous prime is 6889347989. The next prime is 6889348001. The reversal of 6889347990 is 997439886.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2712141 + ... + 2714679.

It is an arithmetic number, because the mean of its divisors is an integer number (109956600).

Almost surely, 2^6889347990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6889347990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10555833600).

6889347990 is an abundant number, since it is smaller than the sum of its proper divisors (14222319210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6889347990 is a wasteful number, since it uses less digits than its factorization.

6889347990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2691 (or 2688 counting only the distinct ones).

The product of its (nonzero) digits is 23514624, while the sum is 63.

The square root of 6889347990 is about 83002.0962988285. The cubic root of 6889347990 is about 1902.7980924249.

The spelling of 6889347990 in words is "six billion, eight hundred eighty-nine million, three hundred forty-seven thousand, nine hundred ninety".