4039989669901 has 2 divisors, whose sum is σ = 4039989669902. Its totient is φ = 4039989669900.

The previous prime is 4039989669899. The next prime is 4039989669923. The reversal of 4039989669901 is 1099669899304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4006606725801 + 33382944100 = 2001651^2 + 182710^2 .

It is a cyclic number.

It is not a de Polignac number, because 4039989669901 - 2¹ = 4039989669899 is a prime.

Together with 4039989669899, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4039989669101) 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 as a sum of consecutive naturals, namely, 2019994834950 + 2019994834951.

It is an arithmetic number, because the mean of its divisors is an integer number (2019994834951).

Almost surely, 2^{4039989669901} is an apocalyptic number.

It is an amenable number.

4039989669901 is a deficient number, since it is larger than the sum of its proper divisors (1).

4039989669901 is an equidigital number, since it uses as much as digits as its factorization.

4039989669901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 204073344, while the sum is 73.

The spelling of 4039989669901 in words is "four trillion, thirty-nine billion, nine hundred eighty-nine million, six hundred sixty-nine thousand, nine hundred one".