389245 has 4 divisors (see below), whose sum is σ = 467100. Its totient is φ = 311392.

The previous prime is 389231. The next prime is 389269. The reversal of 389245 is 542983.

389245 = T₂₇₄ + T₂₇₅ + ... + T₂₈₃.

389245 is nontrivially palindromic in base 2.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542983 = 7 ⋅77569.

It can be written as a sum of positive squares in 2 ways, for example, as 95481 + 293764 = 309^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 389245 - 2⁷ = 389117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38920 + ... + 38929.

It is an arithmetic number, because the mean of its divisors is an integer number (116775).

2³⁸⁹²⁴⁵ is an apocalyptic number.

It is an amenable number.

389245 is a deficient number, since it is larger than the sum of its proper divisors (77855).

389245 is an equidigital number, since it uses as much as digits as its factorization.

389245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77854.

The product of its digits is 8640, while the sum is 31.

The square root of 389245 is about 623.8950232211. The cubic root of 389245 is about 73.0142588022.

The spelling of 389245 in words is "three hundred eighty-nine thousand, two hundred forty-five".