3958706849 has 4 divisors (see below), whose sum is σ = 4065698964. Its totient is φ = 3851714736.

The previous prime is 3958706837. The next prime is 3958706861. The reversal of 3958706849 is 9486078593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9486078593 = 149 ⋅63664957.

It is an interprime number because it is at equal distance from previous prime (3958706837) and next prime (3958706861).

It can be written as a sum of positive squares in 2 ways, for example, as 3675390625 + 283316224 = 60625^2 + 16832^2 .

It is a cyclic number.

It is not a de Polignac number, because 3958706849 - 2⁴ = 3958706833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3958706809) 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 in 3 ways as a sum of consecutive naturals, for example, 53496002 + ... + 53496075.

It is an arithmetic number, because the mean of its divisors is an integer number (1016424741).

Almost surely, 2^3958706849 is an apocalyptic number.

It is an amenable number.

3958706849 is a deficient number, since it is larger than the sum of its proper divisors (106992115).

3958706849 is a wasteful number, since it uses less digits than its factorization.

3958706849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106992114.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The square root of 3958706849 is about 62918.2552920851. The cubic root of 3958706849 is about 1581.9197475010.

The spelling of 3958706849 in words is "three billion, nine hundred fifty-eight million, seven hundred six thousand, eight hundred forty-nine".