389205340 has 48 divisors (see below), whose sum is σ = 832446720. Its totient is φ = 152824320.

The previous prime is 389205307. The next prime is 389205371. The reversal of 389205340 is 43502983.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 389205296 and 389205305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 392245 + ... + 393235.

It is an arithmetic number, because the mean of its divisors is an integer number (17342640).

Almost surely, 2^389205340 is an apocalyptic number.

It is an amenable number.

389205340 is an abundant number, since it is smaller than the sum of its proper divisors (443241380).

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

389205340 is a wasteful number, since it uses less digits than its factorization.

389205340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342 (or 1340 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 389205340 is about 19728.2878121747. The cubic root of 389205340 is about 730.1177892123.

The spelling of 389205340 in words is "three hundred eighty-nine million, two hundred five thousand, three hundred forty".