3979945831 has 8 divisors (see below), whose sum is σ = 4069774800. Its totient is φ = 3890862720.

The previous prime is 3979945817. The next prime is 3979945847. The reversal of 3979945831 is 1385499793.

3979945831 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3979945831 - 2¹¹ = 3979943783 is a prime.

It is a super-2 number, since 2×3979945831² = 31679937635388561122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3979945861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 175666 + ... + 197023.

It is an arithmetic number, because the mean of its divisors is an integer number (508721850).

Almost surely, 2^3979945831 is an apocalyptic number.

3979945831 is a deficient number, since it is larger than the sum of its proper divisors (89828969).

3979945831 is a wasteful number, since it uses less digits than its factorization.

3979945831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372929.

The product of its digits is 7348320, while the sum is 58.

The square root of 3979945831 is about 63086.8118627023. The cubic root of 3979945831 is about 1584.7437721327.

The spelling of 3979945831 in words is "three billion, nine hundred seventy-nine million, nine hundred forty-five thousand, eight hundred thirty-one".