389749 has 2 divisors, whose sum is σ = 389750. Its totient is φ = 389748.

The previous prime is 389743. The next prime is 389761. The reversal of 389749 is 947983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342225 + 47524 = 585^2 + 218^2 .

It is a cyclic number.

It is not a de Polignac number, because 389749 - 2⁷ = 389621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194874 + 194875.

It is an arithmetic number, because the mean of its divisors is an integer number (194875).

2³⁸⁹⁷⁴⁹ is an apocalyptic number.

It is an amenable number.

389749 is a deficient number, since it is larger than the sum of its proper divisors (1).

389749 is an equidigital number, since it uses as much as digits as its factorization.

389749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 389749 is about 624.2988066623. The cubic root of 389749 is about 73.0457585133.

It can be divided in two parts, 38974 and 9, that added together give a palindrome (38983).

The spelling of 389749 in words is "three hundred eighty-nine thousand, seven hundred forty-nine".