3955403663 has 16 divisors (see below), whose sum is σ = 4068102720. Its totient is φ = 3844454400.

The previous prime is 3955403611. The next prime is 3955403687. The reversal of 3955403663 is 3663045593.

It is a Cunningham number, because it is equal to 62892²-1.

It is a cyclic number.

It is not a de Polignac number, because 3955403663 - 2²⁰ = 3954355087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955400663) 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 15 ways as a sum of consecutive naturals, for example, 3835958 + ... + 3836988.

It is an arithmetic number, because the mean of its divisors is an integer number (254256420).

Almost surely, 2^3955403663 is an apocalyptic number.

3955403663 is a deficient number, since it is larger than the sum of its proper divisors (112699057).

3955403663 is a wasteful number, since it uses less digits than its factorization.

3955403663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 874800, while the sum is 44.

The square root of 3955403663 is about 62891.9999920499. Note that the first 5 decimals coincide. The cubic root of 3955403663 is about 1581.4796349924.

The spelling of 3955403663 in words is "three billion, nine hundred fifty-five million, four hundred three thousand, six hundred sixty-three".