389235493 has 2 divisors, whose sum is σ = 389235494. Its totient is φ = 389235492.

The previous prime is 389235487. The next prime is 389235503. The reversal of 389235493 is 394532983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380367009 + 8868484 = 19503^2 + 2978^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389235493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389235293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194617746 + 194617747.

It is an arithmetic number, because the mean of its divisors is an integer number (194617747).

Almost surely, 2^389235493 is an apocalyptic number.

It is an amenable number.

389235493 is a deficient number, since it is larger than the sum of its proper divisors (1).

389235493 is an equidigital number, since it uses as much as digits as its factorization.

389235493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 699840, while the sum is 46.

The square root of 389235493 is about 19729.0520045946. The cubic root of 389235493 is about 730.1366435897.

The spelling of 389235493 in words is "three hundred eighty-nine million, two hundred thirty-five thousand, four hundred ninety-three".