6989744371 has 2 divisors, whose sum is σ = 6989744372. Its totient is φ = 6989744370.

The previous prime is 6989744369. The next prime is 6989744389. The reversal of 6989744371 is 1734479896.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6989744371 - 2¹ = 6989744369 is a prime.

Together with 6989744369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6989744341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494872185 + 3494872186.

It is an arithmetic number, because the mean of its divisors is an integer number (3494872186).

Almost surely, 2^6989744371 is an apocalyptic number.

6989744371 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989744371 is an equidigital number, since it uses as much as digits as its factorization.

6989744371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9144576, while the sum is 58.

The square root of 6989744371 is about 83604.6910824985. The cubic root of 6989744371 is about 1911.9965208113.

The spelling of 6989744371 in words is "six billion, nine hundred eighty-nine million, seven hundred forty-four thousand, three hundred seventy-one".