389634100 has 18 divisors (see below), whose sum is σ = 845506214. Its totient is φ = 155853600.

The previous prime is 389634073. The next prime is 389634103. The reversal of 389634100 is 1436983.

It can be written as a sum of positive squares in 3 ways, for example, as 3825936 + 385808164 = 1956^2 + 19642^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389634103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1948071 + ... + 1948270.

Almost surely, 2^389634100 is an apocalyptic number.

It is an amenable number.

389634100 is an abundant number, since it is smaller than the sum of its proper divisors (455872114).

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

389634100 is a wasteful number, since it uses less digits than its factorization.

389634100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896355 (or 3896348 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 389634100 is about 19739.1514508603. The cubic root of 389634100 is about 730.3857972003.

The spelling of 389634100 in words is "three hundred eighty-nine million, six hundred thirty-four thousand, one hundred".