389561 has 2 divisors, whose sum is σ = 389562. Its totient is φ = 389560.

The previous prime is 389539. The next prime is 389563. The reversal of 389561 is 165983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 383161 + 6400 = 619^2 + 80^2 .

It is an emirp because it is prime and its reverse (165983) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389561 is a prime.

Together with 389563, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (389563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194780 + 194781.

It is an arithmetic number, because the mean of its divisors is an integer number (194781).

2³⁸⁹⁵⁶¹ is an apocalyptic number.

It is an amenable number.

389561 is a deficient number, since it is larger than the sum of its proper divisors (1).

389561 is an equidigital number, since it uses as much as digits as its factorization.

389561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6480, while the sum is 32.

The square root of 389561 is about 624.1482195761. The cubic root of 389561 is about 73.0340117984.

The spelling of 389561 in words is "three hundred eighty-nine thousand, five hundred sixty-one".