6989903387 has 2 divisors, whose sum is σ = 6989903388. Its totient is φ = 6989903386.

The previous prime is 6989903363. The next prime is 6989903477. The reversal of 6989903387 is 7833099896.

6989903387 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6989903387 - 2¹⁰ = 6989902363 is a prime.

It is not a weakly prime, because it can be changed into another prime (6989903087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494951693 + 3494951694.

It is an arithmetic number, because the mean of its divisors is an integer number (3494951694).

Almost surely, 2^6989903387 is an apocalyptic number.

6989903387 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989903387 is an equidigital number, since it uses as much as digits as its factorization.

6989903387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17635968, while the sum is 62.

The square root of 6989903387 is about 83605.6420763575. The cubic root of 6989903387 is about 1912.0110199459.

The spelling of 6989903387 in words is "six billion, nine hundred eighty-nine million, nine hundred three thousand, three hundred eighty-seven".