3989549941 has 4 divisors (see below), whose sum is σ = 4296438412. Its totient is φ = 3682661472.

The previous prime is 3989549917. The next prime is 3989549983. The reversal of 3989549941 is 1499459893.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2411792100 + 1577757841 = 49110^2 + 39721^2 .

It is a cyclic number.

It is not a de Polignac number, because 3989549941 - 2⁹ = 3989549429 is a prime.

It is a super-3 number, since 3×3989549941³ (a number of 30 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3989549941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3989549041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153444216 + ... + 153444241.

It is an arithmetic number, because the mean of its divisors is an integer number (1074109603).

Almost surely, 2^3989549941 is an apocalyptic number.

It is an amenable number.

3989549941 is a deficient number, since it is larger than the sum of its proper divisors (306888471).

3989549941 is a wasteful number, since it uses less digits than its factorization.

3989549941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306888470.

The product of its digits is 12597120, while the sum is 61.

The square root of 3989549941 is about 63162.8842042540. The cubic root of 3989549941 is about 1586.0174768435.

The spelling of 3989549941 in words is "three billion, nine hundred eighty-nine million, five hundred forty-nine thousand, nine hundred forty-one".