3961081239 has 8 divisors (see below), whose sum is σ = 5291943552. Its totient is φ = 2635469880.

The previous prime is 3961081231. The next prime is 3961081249. The reversal of 3961081239 is 9321801693.

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

It is not a de Polignac number, because 3961081239 - 2³ = 3961081231 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 3961081239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3961081231) 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 in 7 ways as a sum of consecutive naturals, for example, 1310977 + ... + 1313994.

It is an arithmetic number, because the mean of its divisors is an integer number (661492944).

Almost surely, 2^3961081239 is an apocalyptic number.

3961081239 is a deficient number, since it is larger than the sum of its proper divisors (1330862313).

3961081239 is a wasteful number, since it uses less digits than its factorization.

3961081239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625477.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 3961081239 is about 62937.1213116711. The cubic root of 3961081239 is about 1582.2359571344.

The spelling of 3961081239 in words is "three billion, nine hundred sixty-one million, eighty-one thousand, two hundred thirty-nine".