389621760 has 192 divisors, whose sum is σ = 1360981440. Its totient is φ = 94371840.

The previous prime is 389621747. The next prime is 389621761. The reversal of 389621760 is 67126983.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (389621761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 337344 + ... + 338496.

It is an arithmetic number, because the mean of its divisors is an integer number (7088445).

Almost surely, 2^389621760 is an apocalyptic number.

389621760 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 389621760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680490720).

389621760 is an abundant number, since it is smaller than the sum of its proper divisors (971359680).

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

389621760 is a wasteful number, since it uses less digits than its factorization.

389621760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 389621760 is about 19738.8388716257. The cubic root of 389621760 is about 730.3780864995.

The spelling of 389621760 in words is "three hundred eighty-nine million, six hundred twenty-one thousand, seven hundred sixty".