389829380 has 48 divisors (see below), whose sum is σ = 868417200. Its totient is φ = 146485248.

The previous prime is 389829367. The next prime is 389829449. The reversal of 389829380 is 83928983.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 141514816 + 248314564 = 11896^2 + 15758^2 .

It is a super-2 number, since 2×389829380² = 303933891022368800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 356114 + ... + 357206.

It is an arithmetic number, because the mean of its divisors is an integer number (18092025).

Almost surely, 2^389829380 is an apocalyptic number.

It is an amenable number.

389829380 is an abundant number, since it is smaller than the sum of its proper divisors (478587820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

389829380 is a wasteful number, since it uses less digits than its factorization.

389829380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 389829380 is about 19744.0973457892. The cubic root of 389829380 is about 730.5077970603.

The spelling of 389829380 in words is "three hundred eighty-nine million, eight hundred twenty-nine thousand, three hundred eighty".