389903380 has 12 divisors (see below), whose sum is σ = 818797140. Its totient is φ = 155961344.

The previous prime is 389903359. The next prime is 389903411. The reversal of 389903380 is 83309983.

It can be written as a sum of positive squares in 2 ways, for example, as 147914244 + 241989136 = 12162^2 + 15556^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9747565 + ... + 9747604.

It is an arithmetic number, because the mean of its divisors is an integer number (68233095).

Almost surely, 2^389903380 is an apocalyptic number.

It is an amenable number.

389903380 is an abundant number, since it is smaller than the sum of its proper divisors (428893760).

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

389903380 is a wasteful number, since it uses less digits than its factorization.

389903380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19495178 (or 19495176 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 389903380 is about 19745.9712346595. The cubic root of 389903380 is about 730.5540174152.

The spelling of 389903380 in words is "three hundred eighty-nine million, nine hundred three thousand, three hundred eighty".