3855421823 has 8 divisors (see below), whose sum is σ = 4453321680. Its totient is φ = 3298756480.

The previous prime is 3855421783. The next prime is 3855421903. The reversal of 3855421823 is 3281245583.

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 3855421823 - 2⁸ = 3855421567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855441823) 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, 10308428 + ... + 10308801.

It is an arithmetic number, because the mean of its divisors is an integer number (556665210).

Almost surely, 2^3855421823 is an apocalyptic number.

3855421823 is a deficient number, since it is larger than the sum of its proper divisors (597899857).

3855421823 is a wasteful number, since it uses less digits than its factorization.

3855421823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20617257.

The product of its digits is 230400, while the sum is 41.

The square root of 3855421823 is about 62092.0431536924. The cubic root of 3855421823 is about 1568.0405895398.

The spelling of 3855421823 in words is "three billion, eight hundred fifty-five million, four hundred twenty-one thousand, eight hundred twenty-three".