3989902241 has 6 divisors (see below), whose sum is σ = 4320426870. Its totient is φ = 3682986528.

The previous prime is 3989902237. The next prime is 3989902243. The reversal of 3989902241 is 1422099893.

3989902241 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 145902241 + 3844000000 = 12079^2 + 62000^2 .

It is not a de Polignac number, because 3989902241 - 2² = 3989902237 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3989902243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11804276 + ... + 11804613.

It is an arithmetic number, because the mean of its divisors is an integer number (720071145).

Almost surely, 2^3989902241 is an apocalyptic number.

It is an amenable number.

3989902241 is a deficient number, since it is larger than the sum of its proper divisors (330524629).

3989902241 is a wasteful number, since it uses less digits than its factorization.

3989902241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23608915 (or 23608902 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 3989902241 is about 63165.6729640396. The cubic root of 3989902241 is about 1586.0641602639.

The spelling of 3989902241 in words is "three billion, nine hundred eighty-nine million, nine hundred two thousand, two hundred forty-one".