3867664249 has 2 divisors, whose sum is σ = 3867664250. Its totient is φ = 3867664248.

The previous prime is 3867664243. The next prime is 3867664259. The reversal of 3867664249 is 9424667683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3802942224 + 64722025 = 61668^2 + 8045^2 .

It is an emirp because it is prime and its reverse (9424667683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3867664249 - 2⁷ = 3867664121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3867664249.

It is not a weakly prime, because it can be changed into another prime (3867664243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1933832124 + 1933832125.

It is an arithmetic number, because the mean of its divisors is an integer number (1933832125).

Almost surely, 2^3867664249 is an apocalyptic number.

It is an amenable number.

3867664249 is a deficient number, since it is larger than the sum of its proper divisors (1).

3867664249 is an equidigital number, since it uses as much as digits as its factorization.

3867664249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10450944, while the sum is 55.

The square root of 3867664249 is about 62190.5479072182. The cubic root of 3867664249 is about 1569.6985436869.

The spelling of 3867664249 in words is "three billion, eight hundred sixty-seven million, six hundred sixty-four thousand, two hundred forty-nine".