6985887449 has 2 divisors, whose sum is σ = 6985887450. Its totient is φ = 6985887448.

The previous prime is 6985887443. The next prime is 6985887473. The reversal of 6985887449 is 9447885896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6937723849 + 48163600 = 83293^2 + 6940^2 .

It is a cyclic number.

It is not a de Polignac number, because 6985887449 - 2⁸ = 6985887193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (6985887443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492943724 + 3492943725.

It is an arithmetic number, because the mean of its divisors is an integer number (3492943725).

Almost surely, 2^6985887449 is an apocalyptic number.

It is an amenable number.

6985887449 is a deficient number, since it is larger than the sum of its proper divisors (1).

6985887449 is an equidigital number, since it uses as much as digits as its factorization.

6985887449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139345920, while the sum is 68.

The square root of 6985887449 is about 83581.6214786480. The cubic root of 6985887449 is about 1911.6447779404.

The spelling of 6985887449 in words is "six billion, nine hundred eighty-five million, eight hundred eighty-seven thousand, four hundred forty-nine".