75389 has 2 divisors, whose sum is σ = 75390. Its totient is φ = 75388.

The previous prime is 75377. The next prime is 75391. The reversal of 75389 is 98357.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55225 + 20164 = 235^2 + 142^2 .

It is a cyclic number.

It is not a de Polignac number, because 75389 - 2⁸ = 75133 is a prime.

It is a Sophie Germain prime.

Together with 75391, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37694 + 37695.

It is an arithmetic number, because the mean of its divisors is an integer number (37695).

2⁷⁵³⁸⁹ is an apocalyptic number.

It is an amenable number.

75389 is a deficient number, since it is larger than the sum of its proper divisors (1).

75389 is an equidigital number, since it uses as much as digits as its factorization.

75389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 32.

The square root of 75389 is about 274.5705738057. The cubic root of 75389 is about 42.2444176418.

Subtracting from 75389 its sum of digits (32), we obtain a palindrome (75357).

It can be divided in two parts, 75 and 389, that added together give a palindrome (464).

The spelling of 75389 in words is "seventy-five thousand, three hundred eighty-nine".