6989744369 has 2 divisors, whose sum is σ = 6989744370. Its totient is φ = 6989744368.

The previous prime is 6989744351. The next prime is 6989744371. The reversal of 6989744369 is 9634479896.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5774176144 + 1215568225 = 75988^2 + 34865^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6989744369 is a prime.

It is a super-2 number, since 2×6989744369² = 97713052687934416322, which contains 22 as substring.

Together with 6989744371, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6989744309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494872184 + 3494872185.

It is an arithmetic number, because the mean of its divisors is an integer number (3494872185).

Almost surely, 2^6989744369 is an apocalyptic number.

It is an amenable number.

6989744369 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989744369 is an equidigital number, since it uses as much as digits as its factorization.

6989744369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 65.

The square root of 6989744369 is about 83604.6910705374. The cubic root of 6989744369 is about 1911.9965206290.

The spelling of 6989744369 in words is "six billion, nine hundred eighty-nine million, seven hundred forty-four thousand, three hundred sixty-nine".