3989913757 has 8 divisors (see below), whose sum is σ = 4128816600. Its totient is φ = 3851098944.

The previous prime is 3989913751. The next prime is 3989913773. The reversal of 3989913757 is 7573199893.

3989913757 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 4 ways, for example, as 2949141636 + 1040772121 = 54306^2 + 32261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3989913757 - 2³ = 3989913749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3989913695 and 3989913704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989913751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77983 + ... + 118579.

It is an arithmetic number, because the mean of its divisors is an integer number (516102075).

Almost surely, 2^3989913757 is an apocalyptic number.

It is an amenable number.

3989913757 is a deficient number, since it is larger than the sum of its proper divisors (138902843).

3989913757 is a wasteful number, since it uses less digits than its factorization.

3989913757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44015.

The product of its digits is 12859560, while the sum is 61.

The square root of 3989913757 is about 63165.7641210807. The cubic root of 3989913757 is about 1586.0656862075.

The spelling of 3989913757 in words is "three billion, nine hundred eighty-nine million, nine hundred thirteen thousand, seven hundred fifty-seven".