389722 has 4 divisors (see below), whose sum is σ = 584586. Its totient is φ = 194860.

The previous prime is 389713. The next prime is 389723. The reversal of 389722 is 227983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 227983 = 7 ⋅32569.

It can be written as a sum of positive squares in only one way, i.e., 383161 + 6561 = 619^2 + 81^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (389723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97429 + ... + 97432.

2³⁸⁹⁷²² is an apocalyptic number.

389722 is a deficient number, since it is larger than the sum of its proper divisors (194864).

389722 is a wasteful number, since it uses less digits than its factorization.

389722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194863.

The product of its digits is 6048, while the sum is 31.

The square root of 389722 is about 624.2771820273. The cubic root of 389722 is about 73.0440717175.

It can be divided in two parts, 389 and 722, that added together give a palindrome (1111).

The spelling of 389722 in words is "three hundred eighty-nine thousand, seven hundred twenty-two".