3967857439 has 16 divisors (see below), whose sum is σ = 4966295040. Its totient is φ = 3086189280.

The previous prime is 3967857433. The next prime is 3967857463. The reversal of 3967857439 is 9347587693.

3967857439 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3967857439 - 2¹⁵ = 3967824671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3967857433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 364147 + ... + 374884.

It is an arithmetic number, because the mean of its divisors is an integer number (310393440).

Almost surely, 2^3967857439 is an apocalyptic number.

3967857439 is a deficient number, since it is larger than the sum of its proper divisors (998437601).

3967857439 is a wasteful number, since it uses less digits than its factorization.

3967857439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739110.

The product of its digits is 34292160, while the sum is 61.

The square root of 3967857439 is about 62990.9314028615. The cubic root of 3967857439 is about 1583.1376839346.

The spelling of 3967857439 in words is "three billion, nine hundred sixty-seven million, eight hundred fifty-seven thousand, four hundred thirty-nine".