3985398143 has 8 divisors (see below), whose sum is σ = 4196235120. Its totient is φ = 3774669120.

The previous prime is 3985398133. The next prime is 3985398149. The reversal of 3985398143 is 3418935893.

3985398143 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3985398143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985398149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55253 + ... + 104993.

It is an arithmetic number, because the mean of its divisors is an integer number (524529390).

Almost surely, 2^3985398143 is an apocalyptic number.

3985398143 is a deficient number, since it is larger than the sum of its proper divisors (210836977).

3985398143 is a wasteful number, since it uses less digits than its factorization.

3985398143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53977.

The product of its digits is 2799360, while the sum is 53.

The square root of 3985398143 is about 63130.0098447640. The cubic root of 3985398143 is about 1585.4671132007.

The spelling of 3985398143 in words is "three billion, nine hundred eighty-five million, three hundred ninety-eight thousand, one hundred forty-three".