3933856854 has 80 divisors (see below), whose sum is σ = 9052325568. Its totient is φ = 1276259328.

The previous prime is 3933856811. The next prime is 3933856859. The reversal of 3933856854 is 4586583393.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3933856854.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3933856859) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1468164 + ... + 1470840.

Almost surely, 2^3933856854 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3933856854, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4526162784).

3933856854 is an abundant number, since it is smaller than the sum of its proper divisors (5118468714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3933856854 is a wasteful number, since it uses less digits than its factorization.

3933856854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2931 (or 2922 counting only the distinct ones).

The product of its digits is 9331200, while the sum is 54.

The square root of 3933856854 is about 62720.4659899781. The cubic root of 3933856854 is about 1578.6027349504.

The spelling of 3933856854 in words is "three billion, nine hundred thirty-three million, eight hundred fifty-six thousand, eight hundred fifty-four".