6989668429 has 2 divisors, whose sum is σ = 6989668430. Its totient is φ = 6989668428.

The previous prime is 6989668423. The next prime is 6989668519. The reversal of 6989668429 is 9248669896.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5722166025 + 1267502404 = 75645^2 + 35602^2 .

It is a cyclic number.

It is not a de Polignac number, because 6989668429 - 2¹¹ = 6989666381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6989668423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3494834214 + 3494834215.

It is an arithmetic number, because the mean of its divisors is an integer number (3494834215).

Almost surely, 2^6989668429 is an apocalyptic number.

It is an amenable number.

6989668429 is a deficient number, since it is larger than the sum of its proper divisors (1).

6989668429 is an equidigital number, since it uses as much as digits as its factorization.

6989668429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80621568, while the sum is 67.

The square root of 6989668429 is about 83604.2369081855. The cubic root of 6989668429 is about 1911.9895963156.

The spelling of 6989668429 in words is "six billion, nine hundred eighty-nine million, six hundred sixty-eight thousand, four hundred twenty-nine".