3906499969 has 2 divisors, whose sum is σ = 3906499970. Its totient is φ = 3906499968.

The previous prime is 3906499943. The next prime is 3906500083. The reversal of 3906499969 is 9699946093.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2624000625 + 1282499344 = 51225^2 + 35812^2 .

It is an emirp because it is prime and its reverse (9699946093) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3906499969 - 2¹⁹ = 3905975681 is a prime.

It is a super-2 number, since 2×3906499969² = 30521484015594001922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3906499969.

It is not a weakly prime, because it can be changed into another prime (3906499169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1953249984 + 1953249985.

It is an arithmetic number, because the mean of its divisors is an integer number (1953249985).

Almost surely, 2^3906499969 is an apocalyptic number.

It is an amenable number.

3906499969 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906499969 is an equidigital number, since it uses as much as digits as its factorization.

3906499969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25509168, while the sum is 64.

The square root of 3906499969 is about 62501.9997200090. Note that the first 3 decimals coincide. The cubic root of 3906499969 is about 1574.9349053806.

The spelling of 3906499969 in words is "three billion, nine hundred six million, four hundred ninety-nine thousand, nine hundred sixty-nine".