3993989959 has 2 divisors, whose sum is σ = 3993989960. Its totient is φ = 3993989958.

The previous prime is 3993989921. The next prime is 3993990029. The reversal of 3993989959 is 9599893993.

It is a weak prime.

It is an emirp because it is prime and its reverse (9599893993) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3993989959 - 2²⁹ = 3457119047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3993989891 and 3993989900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3993989159) 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 as a sum of consecutive naturals, namely, 1996994979 + 1996994980.

It is an arithmetic number, because the mean of its divisors is an integer number (1996994980).

Almost surely, 2^3993989959 is an apocalyptic number.

3993989959 is a deficient number, since it is larger than the sum of its proper divisors (1).

3993989959 is an equidigital number, since it uses as much as digits as its factorization.

3993989959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 191318760, while the sum is 73.

The square root of 3993989959 is about 63198.0217965721. The cubic root of 3993989959 is about 1586.6056246720.

The spelling of 3993989959 in words is "three billion, nine hundred ninety-three million, nine hundred eighty-nine thousand, nine hundred fifty-nine".