3996973663 has 2 divisors, whose sum is σ = 3996973664. Its totient is φ = 3996973662.

The previous prime is 3996973609. The next prime is 3996973679. The reversal of 3996973663 is 3663796993.

It is a strong prime.

It is an emirp because it is prime and its reverse (3663796993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3996973663 - 2¹³ = 3996965471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3996973363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1998486831 + 1998486832.

It is an arithmetic number, because the mean of its divisors is an integer number (1998486832).

Almost surely, 2^3996973663 is an apocalyptic number.

3996973663 is a deficient number, since it is larger than the sum of its proper divisors (1).

3996973663 is an equidigital number, since it uses as much as digits as its factorization.

3996973663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 29760696, while the sum is 61.

The square root of 3996973663 is about 63221.6233815615. The cubic root of 3996973663 is about 1587.0006167521. Note that the first 3 decimals are identical.

The spelling of 3996973663 in words is "three billion, nine hundred ninety-six million, nine hundred seventy-three thousand, six hundred sixty-three".