389799900 has 162 divisors, whose sum is σ = 1421445480. Its totient is φ = 89087040.

The previous prime is 389799899. The next prime is 389799931. The reversal of 389799900 is 9997983.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 39681 + ... + 48519.

Almost surely, 2^389799900 is an apocalyptic number.

389799900 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 389799900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (710722740).

389799900 is an abundant number, since it is smaller than the sum of its proper divisors (1031645580).

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

389799900 is a wasteful number, since it uses less digits than its factorization.

389799900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873 (or 8856 counting only the distinct ones).

The product of its (nonzero) digits is 1102248, while the sum is 54.

The square root of 389799900 is about 19743.3507794396. The cubic root of 389799900 is about 730.4893822411.

The spelling of 389799900 in words is "three hundred eighty-nine million, seven hundred ninety-nine thousand, nine hundred".