389920349 has 12 divisors (see below), whose sum is σ = 482540256. Its totient is φ = 308507472.

The previous prime is 389920331. The next prime is 389920351. The reversal of 389920349 is 943029983.

It is not a de Polignac number, because 389920349 - 2²⁸ = 121484893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389920049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163619 + ... + 165984.

It is an arithmetic number, because the mean of its divisors is an integer number (40211688).

Almost surely, 2^389920349 is an apocalyptic number.

It is an amenable number.

389920349 is a deficient number, since it is larger than the sum of its proper divisors (92619907).

389920349 is a wasteful number, since it uses less digits than its factorization.

389920349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329636 (or 329623 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 389920349 is about 19746.4009125714. The cubic root of 389920349 is about 730.5646154179.

The spelling of 389920349 in words is "three hundred eighty-nine million, nine hundred twenty thousand, three hundred forty-nine".