389671984 has 80 divisors (see below), whose sum is σ = 846168064. Its totient is φ = 172627200.

The previous prime is 389671979. The next prime is 389671991. The reversal of 389671984 is 489176983.

It is a super-2 number, since 2×389671984² = 303688510228992512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437769 + ... + 1438039.

Almost surely, 2^389671984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 389671984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423084032).

389671984 is an abundant number, since it is smaller than the sum of its proper divisors (456496080).

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

389671984 is a wasteful number, since it uses less digits than its factorization.

389671984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 540 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 389671984 is about 19740.1110432540. Note that the first 3 decimals coincide. The cubic root of 389671984 is about 730.4094681596.

The spelling of 389671984 in words is "three hundred eighty-nine million, six hundred seventy-one thousand, nine hundred eighty-four".