3928431087 has 18 divisors (see below), whose sum is σ = 6600833928. Its totient is φ = 2244817512.

The previous prime is 3928431079. The next prime is 3928431097. The reversal of 3928431087 is 7801348293.

It is not a de Polignac number, because 3928431087 - 2³ = 3928431079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3928431047) 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 17 ways as a sum of consecutive naturals, for example, 4453563 + ... + 4454444.

It is an arithmetic number, because the mean of its divisors is an integer number (366712996).

Almost surely, 2^3928431087 is an apocalyptic number.

3928431087 is a deficient number, since it is larger than the sum of its proper divisors (2672402841).

3928431087 is a wasteful number, since it uses less digits than its factorization.

3928431087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8908027 (or 8908017 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 3928431087 is about 62677.1975043556. The cubic root of 3928431087 is about 1577.8766390960.

The spelling of 3928431087 in words is "three billion, nine hundred twenty-eight million, four hundred thirty-one thousand, eighty-seven".