389629549 has 2 divisors, whose sum is σ = 389629550. Its totient is φ = 389629548.

The previous prime is 389629481. The next prime is 389629567. The reversal of 389629549 is 945926983.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258984649 + 130644900 = 16093^2 + 11430^2 .

It is an emirp because it is prime and its reverse (945926983) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 389629549 - 2²³ = 381240941 is a prime.

It is a super-2 number, since 2×389629549² = 303622370907886802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389629549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389624549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194814774 + 194814775.

It is an arithmetic number, because the mean of its divisors is an integer number (194814775).

Almost surely, 2^389629549 is an apocalyptic number.

It is an amenable number.

389629549 is a deficient number, since it is larger than the sum of its proper divisors (1).

389629549 is an equidigital number, since it uses as much as digits as its factorization.

389629549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4199040, while the sum is 55.

The square root of 389629549 is about 19739.0361720120. The cubic root of 389629549 is about 730.3829535078.

The spelling of 389629549 in words is "three hundred eighty-nine million, six hundred twenty-nine thousand, five hundred forty-nine".