3856426887 has 8 divisors (see below), whose sum is σ = 5168004336. Its totient is φ = 2557900352.

The previous prime is 3856426879. The next prime is 3856426909. The reversal of 3856426887 is 7886246583.

It is a happy number.

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 3856426887 - 2³ = 3856426879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856426807) 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, 3262038 + ... + 3263219.

It is an arithmetic number, because the mean of its divisors is an integer number (646000542).

Almost surely, 2^3856426887 is an apocalyptic number.

3856426887 is a deficient number, since it is larger than the sum of its proper divisors (1311577449).

3856426887 is a wasteful number, since it uses less digits than its factorization.

3856426887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6525457.

The product of its digits is 15482880, while the sum is 57.

The square root of 3856426887 is about 62100.1359660347. The cubic root of 3856426887 is about 1568.1768343998.

The spelling of 3856426887 in words is "three billion, eight hundred fifty-six million, four hundred twenty-six thousand, eight hundred eighty-seven".