6986120489 has 2 divisors, whose sum is σ = 6986120490. Its totient is φ = 6986120488.

The previous prime is 6986120443. The next prime is 6986120501. The reversal of 6986120489 is 9840216896.

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., 6944388889 + 41731600 = 83333^2 + 6460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6986120489 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 6986120489.

It is not a weakly prime, because it can be changed into another prime (6986120789) by changing a digit.

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 as a sum of consecutive naturals, namely, 3493060244 + 3493060245.

It is an arithmetic number, because the mean of its divisors is an integer number (3493060245).

Almost surely, 2^6986120489 is an apocalyptic number.

It is an amenable number.

6986120489 is a deficient number, since it is larger than the sum of its proper divisors (1).

6986120489 is an equidigital number, since it uses as much as digits as its factorization.

6986120489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 6986120489 is about 83583.0155534006. The cubic root of 6986120489 is about 1911.6660343543. Note that the first 3 decimals are identical.

The spelling of 6986120489 in words is "six billion, nine hundred eighty-six million, one hundred twenty thousand, four hundred eighty-nine".