385989900 has 36 divisors (see below), whose sum is σ = 1116798312. Its totient is φ = 102930560.

The previous prime is 385989889. The next prime is 385989911. The reversal of 385989900 is 9989583.

It is an interprime number because it is at equal distance from previous prime (385989889) and next prime (385989911).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 643017 + ... + 643616.

Almost surely, 2^385989900 is an apocalyptic number.

385989900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385989900 is an abundant number, since it is smaller than the sum of its proper divisors (730808412).

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

385989900 is a wasteful number, since it uses less digits than its factorization.

385989900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286650 (or 1286643 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 385989900 is about 19646.6256644748. The cubic root of 385989900 is about 728.1015914055.

The spelling of 385989900 in words is "three hundred eighty-five million, nine hundred eighty-nine thousand, nine hundred".