389235293 has 2 divisors, whose sum is σ = 389235294. Its totient is φ = 389235292.

The previous prime is 389235289. The next prime is 389235313. The reversal of 389235293 is 392532983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 357852889 + 31382404 = 18917^2 + 5602^2 .

It is an emirp because it is prime and its reverse (392532983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389235293 - 2² = 389235289 is a prime.

It is a super-2 number, since 2×389235293² = 303008226633591698, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389235493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194617646 + 194617647.

It is an arithmetic number, because the mean of its divisors is an integer number (194617647).

Almost surely, 2^389235293 is an apocalyptic number.

It is an amenable number.

389235293 is a deficient number, since it is larger than the sum of its proper divisors (1).

389235293 is an equidigital number, since it uses as much as digits as its factorization.

389235293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 44.

The square root of 389235293 is about 19729.0469359267. The cubic root of 389235293 is about 730.1365185349.

The spelling of 389235293 in words is "three hundred eighty-nine million, two hundred thirty-five thousand, two hundred ninety-three".