3963578849 has 4 divisors (see below), whose sum is σ = 4196730564. Its totient is φ = 3730427136.

The previous prime is 3963578833. The next prime is 3963578863. The reversal of 3963578849 is 9488753693.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9488753693 = 1487 ⋅6381139.

It can be written as a sum of positive squares in 2 ways, for example, as 2752051600 + 1211527249 = 52460^2 + 34807^2 .

It is a cyclic number.

It is not a de Polignac number, because 3963578849 - 2⁴ = 3963578833 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3963578791 and 3963578800.

It is not an unprimeable number, because it can be changed into a prime (3963578149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116575832 + ... + 116575865.

It is an arithmetic number, because the mean of its divisors is an integer number (1049182641).

Almost surely, 2^3963578849 is an apocalyptic number.

It is an amenable number.

3963578849 is a deficient number, since it is larger than the sum of its proper divisors (233151715).

3963578849 is a wasteful number, since it uses less digits than its factorization.

3963578849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233151714.

The product of its digits is 39191040, while the sum is 62.

The square root of 3963578849 is about 62956.9602903444. The cubic root of 3963578849 is about 1582.5684402633.

The spelling of 3963578849 in words is "three billion, nine hundred sixty-three million, five hundred seventy-eight thousand, eight hundred forty-nine".