389516910 has 64 divisors (see below), whose sum is σ = 988243200. Its totient is φ = 97984512.

The previous prime is 389516909. The next prime is 389516923. The reversal of 389516910 is 19615983.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145161 + ... + 147819.

It is an arithmetic number, because the mean of its divisors is an integer number (15441300).

Almost surely, 2^389516910 is an apocalyptic number.

389516910 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 389516910, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (494121600).

389516910 is an abundant number, since it is smaller than the sum of its proper divisors (598726290).

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

389516910 is a wasteful number, since it uses less digits than its factorization.

389516910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 389516910 is about 19736.1827616183. The cubic root of 389516910 is about 730.3125639674.

The spelling of 389516910 in words is "three hundred eighty-nine million, five hundred sixteen thousand, nine hundred ten".