389729530 has 8 divisors (see below), whose sum is σ = 701513172. Its totient is φ = 155891808.

The previous prime is 389729519. The next prime is 389729537. The reversal of 389729530 is 35927983.

It can be written as a sum of positive squares in 2 ways, for example, as 338449609 + 51279921 = 18397^2 + 7161^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (389729537) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19486467 + ... + 19486486.

Almost surely, 2^389729530 is an apocalyptic number.

389729530 is a deficient number, since it is larger than the sum of its proper divisors (311783642).

389729530 is a wasteful number, since it uses less digits than its factorization.

389729530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38972960.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 389729530 is about 19741.5685800293. The cubic root of 389729530 is about 730.4454215393.

The spelling of 389729530 in words is "three hundred eighty-nine million, seven hundred twenty-nine thousand, five hundred thirty".