3889597997 has 2 divisors, whose sum is σ = 3889597998. Its totient is φ = 3889597996.

The previous prime is 3889597991. The next prime is 3889598003. The reversal of 3889597997 is 7997959883.

It is a balanced prime because it is at equal distance from previous prime (3889597991) and next prime (3889598003).

It can be written as a sum of positive squares in only one way, i.e., 2015920201 + 1873677796 = 44899^2 + 43286^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3889597997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3889597991) 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, 1944798998 + 1944798999.

It is an arithmetic number, because the mean of its divisors is an integer number (1944798999).

Almost surely, 2^3889597997 is an apocalyptic number.

It is an amenable number.

3889597997 is a deficient number, since it is larger than the sum of its proper divisors (1).

3889597997 is an equidigital number, since it uses as much as digits as its factorization.

3889597997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 308629440, while the sum is 74.

The square root of 3889597997 is about 62366.6417005117. The cubic root of 3889597997 is about 1572.6602358699.

The spelling of 3889597997 in words is "three billion, eight hundred eighty-nine million, five hundred ninety-seven thousand, nine hundred ninety-seven".