389757 has 4 divisors (see below), whose sum is σ = 519680. Its totient is φ = 259836.

The previous prime is 389749. The next prime is 389761. The reversal of 389757 is 757983.

389757 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 389757 - 2³ = 389749 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64957 + ... + 64962.

It is an arithmetic number, because the mean of its divisors is an integer number (129920).

2³⁸⁹⁷⁵⁷ is an apocalyptic number.

It is an amenable number.

389757 is a deficient number, since it is larger than the sum of its proper divisors (129923).

389757 is a wasteful number, since it uses less digits than its factorization.

389757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129922.

The product of its digits is 52920, while the sum is 39.

The square root of 389757 is about 624.3052138177. The cubic root of 389757 is about 73.0462582898.

The spelling of 389757 in words is "three hundred eighty-nine thousand, seven hundred fifty-seven".