389557930 has 16 divisors (see below), whose sum is σ = 710811144. Its totient is φ = 153688320.

The previous prime is 389557921. The next prime is 389557939. The reversal of 389557930 is 39755983.

It is an interprime number because it is at equal distance from previous prime (389557921) and next prime (389557939).

It can be written as a sum of positive squares in 4 ways, for example, as 353928969 + 35628961 = 18813^2 + 5969^2 .

It is not an unprimeable number, because it can be changed into a prime (389557939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266091 + ... + 267550.

Almost surely, 2^389557930 is an apocalyptic number.

389557930 is a deficient number, since it is larger than the sum of its proper divisors (321253214).

389557930 is a wasteful number, since it uses less digits than its factorization.

389557930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533721.

The product of its (nonzero) digits is 1020600, while the sum is 49.

The square root of 389557930 is about 19737.2219423099. The cubic root of 389557930 is about 730.3381994568.

The spelling of 389557930 in words is "three hundred eighty-nine million, five hundred fifty-seven thousand, nine hundred thirty".