3663663939 has 40 divisors (see below), whose sum is σ = 5904470880. Its totient is φ = 2250509184.

The previous prime is 3663663911. The next prime is 3663663973. The reversal of 3663663939 is 9393663663.

It is not a de Polignac number, because 3663663939 - 2⁷ = 3663663811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3663663139) 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 39 ways as a sum of consecutive naturals, for example, 646882 + ... + 652520.

It is an arithmetic number, because the mean of its divisors is an integer number (147611772).

Almost surely, 2^3663663939 is an apocalyptic number.

3663663939 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3663663939 is a deficient number, since it is larger than the sum of its proper divisors (2240806941).

3663663939 is a wasteful number, since it uses less digits than its factorization.

3663663939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6281 (or 6272 counting only the distinct ones).

The product of its digits is 8503056, while the sum is 54.

The square root of 3663663939 is about 60528.2077960351. The cubic root of 3663663939 is about 1541.6006210317.

The spelling of 3663663939 in words is "three billion, six hundred sixty-three million, six hundred sixty-three thousand, nine hundred thirty-nine".