389213100 has 252 divisors, whose sum is σ = 1337700840. Its totient is φ = 97977600.

The previous prime is 389213087. The next prime is 389213131. The reversal of 389213100 is 1312983.

It is a super-2 number, since 2×389213100² = 302973674423220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 83 ways as a sum of consecutive naturals, for example, 1384960 + ... + 1385240.

Almost surely, 2^389213100 is an apocalyptic number.

389213100 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 389213100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (668850420).

389213100 is an abundant number, since it is smaller than the sum of its proper divisors (948487740).

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

389213100 is a wasteful number, since it uses less digits than its factorization.

389213100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 389213100 is about 19728.4844831021. The cubic root of 389213100 is about 730.1226415578.

The spelling of 389213100 in words is "three hundred eighty-nine million, two hundred thirteen thousand, one hundred".