389478000 has 160 divisors (see below), whose sum is σ = 1267418880. Its totient is φ = 102892800.

The previous prime is 389477999. The next prime is 389478013. The reversal of 389478000 is 874983.

It is a super-2 number, since 2×389478000² = 303386224968000000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 389478000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 833767 + ... + 834233.

It is an arithmetic number, because the mean of its divisors is an integer number (7921368).

Almost surely, 2^389478000 is an apocalyptic number.

389478000 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 389478000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (633709440).

389478000 is an abundant number, since it is smaller than the sum of its proper divisors (877940880).

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

389478000 is a wasteful number, since it uses less digits than its factorization.

389478000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632 (or 616 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 389478000 is about 19735.1969840688. The cubic root of 389478000 is about 730.2882454613.

The spelling of 389478000 in words is "three hundred eighty-nine million, four hundred seventy-eight thousand".