3947039841 has 8 divisors (see below), whose sum is σ = 5539705120. Its totient is φ = 2492867232.

The previous prime is 3947039839. The next prime is 3947039843. The reversal of 3947039841 is 1489307493.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3947039839) and next prime (3947039843).

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

It is not a de Polignac number, because 3947039841 - 2¹ = 3947039839 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3947039843) 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, 34623100 + ... + 34623213.

It is an arithmetic number, because the mean of its divisors is an integer number (692463140).

Almost surely, 2^3947039841 is an apocalyptic number.

It is an amenable number.

3947039841 is a deficient number, since it is larger than the sum of its proper divisors (1592665279).

3947039841 is a wasteful number, since it uses less digits than its factorization.

3947039841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69246335.

The product of its (nonzero) digits is 653184, while the sum is 48.

The square root of 3947039841 is about 62825.4712755901. The cubic root of 3947039841 is about 1580.3641526990.

The spelling of 3947039841 in words is "three billion, nine hundred forty-seven million, thirty-nine thousand, eight hundred forty-one".