3447986887 has 2 divisors, whose sum is σ = 3447986888. Its totient is φ = 3447986886.

The previous prime is 3447986809. The next prime is 3447986909. The reversal of 3447986887 is 7886897443.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3447986887 is a prime.

It is a super-2 number, since 2×3447986887² = 23777227145847901538, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3447986587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1723993443 + 1723993444.

It is an arithmetic number, because the mean of its divisors is an integer number (1723993444).

Almost surely, 2^3447986887 is an apocalyptic number.

3447986887 is a deficient number, since it is larger than the sum of its proper divisors (1).

3447986887 is an equidigital number, since it uses as much as digits as its factorization.

3447986887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 65028096, while the sum is 64.

The square root of 3447986887 is about 58719.5613658685. The cubic root of 3447986887 is about 1510.7358498487.

The spelling of 3447986887 in words is "three billion, four hundred forty-seven million, nine hundred eighty-six thousand, eight hundred eighty-seven".