389375 has 20 divisors (see below), whose sum is σ = 562320. Its totient is φ = 264000.

The previous prime is 389369. The next prime is 389381. The reversal of 389375 is 573983.

It is a Cunningham number, because it is equal to 624²-1.

It is an interprime number because it is at equal distance from previous prime (389369) and next prime (389381).

It is not a de Polignac number, because 389375 - 2¹⁰ = 388351 is a prime.

It is a super-2 number, since 2×389375² = 303225781250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a nialpdrome in base 5.

It is a zygodrome in base 4.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 389375.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4331 + ... + 4419.

It is an arithmetic number, because the mean of its divisors is an integer number (28116).

2³⁸⁹³⁷⁵ is an apocalyptic number.

389375 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

389375 is a deficient number, since it is larger than the sum of its proper divisors (172945).

389375 is an frugal number, since it uses more digits than its factorization.

389375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116 (or 101 counting only the distinct ones).

The product of its digits is 22680, while the sum is 35.

The square root of 389375 is about 623.9991987174. Note that the first 3 decimals coincide. The cubic root of 389375 is about 73.0223863287.

The spelling of 389375 in words is "three hundred eighty-nine thousand, three hundred seventy-five".