389722143 has 16 divisors (see below), whose sum is σ = 543767040. Its totient is φ = 247810464.

The previous prime is 389722139. The next prime is 389722217. The reversal of 389722143 is 341227983.

It is not a de Polignac number, because 389722143 - 2² = 389722139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389722133) 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, 16905 + ... + 32637.

It is an arithmetic number, because the mean of its divisors is an integer number (33985440).

Almost surely, 2^389722143 is an apocalyptic number.

389722143 is a deficient number, since it is larger than the sum of its proper divisors (154044897).

389722143 is a wasteful number, since it uses less digits than its factorization.

389722143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16118.

The product of its digits is 72576, while the sum is 39.

The square root of 389722143 is about 19741.3814866133. The cubic root of 389722143 is about 730.4408065144.

The spelling of 389722143 in words is "three hundred eighty-nine million, seven hundred twenty-two thousand, one hundred forty-three".