389498880 has 192 divisors, whose sum is σ = 1289433600. Its totient is φ = 100270080.

The previous prime is 389498869. The next prime is 389498881. The reversal of 389498880 is 88894983.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 389498880.

It is not an unprimeable number, because it can be changed into a prime (389498881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 952116 + ... + 952524.

It is an arithmetic number, because the mean of its divisors is an integer number (6715800).

Almost surely, 2^389498880 is an apocalyptic number.

389498880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389498880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644716800).

389498880 is an abundant number, since it is smaller than the sum of its proper divisors (899934720).

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

389498880 is a wasteful number, since it uses less digits than its factorization.

389498880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470 (or 450 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 57.

The square root of 389498880 is about 19735.7259810730. The cubic root of 389498880 is about 730.3012955318.

The spelling of 389498880 in words is "three hundred eighty-nine million, four hundred ninety-eight thousand, eight hundred eighty".