389429900 has 36 divisors (see below), whose sum is σ = 849528960. Its totient is φ = 154948800.

The previous prime is 389429881. The next prime is 389429903. The reversal of 389429900 is 9924983.

It is not an unprimeable number, because it can be changed into a prime (389429903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8906 + ... + 29294.

Almost surely, 2^389429900 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 389429900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424764480).

389429900 is an abundant number, since it is smaller than the sum of its proper divisors (460099060).

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

389429900 is a wasteful number, since it uses less digits than its factorization.

389429900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20594 (or 20587 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 389429900 is about 19733.9783115316. The cubic root of 389429900 is about 730.2581810240.

The spelling of 389429900 in words is "three hundred eighty-nine million, four hundred twenty-nine thousand, nine hundred".