389697229 has 2 divisors, whose sum is σ = 389697230. Its totient is φ = 389697228.

The previous prime is 389697221. The next prime is 389697299. The reversal of 389697229 is 922796983.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 298494729 + 91202500 = 17277^2 + 9550^2 .

It is a cyclic number.

It is not a de Polignac number, because 389697229 - 2³ = 389697221 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389697229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389697221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194848614 + 194848615.

It is an arithmetic number, because the mean of its divisors is an integer number (194848615).

Almost surely, 2^389697229 is an apocalyptic number.

It is an amenable number.

389697229 is a deficient number, since it is larger than the sum of its proper divisors (1).

389697229 is an equidigital number, since it uses as much as digits as its factorization.

389697229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 55.

The square root of 389697229 is about 19740.7504669909. The cubic root of 389697229 is about 730.4252410743.

The spelling of 389697229 in words is "three hundred eighty-nine million, six hundred ninety-seven thousand, two hundred twenty-nine".