389752550 has 24 divisors (see below), whose sum is σ = 790844472. Its totient is φ = 141728000.

The previous prime is 389752511. The next prime is 389752613. The reversal of 389752550 is 55257983.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353771 + ... + 354870.

It is an arithmetic number, because the mean of its divisors is an integer number (32951853).

Almost surely, 2^389752550 is an apocalyptic number.

389752550 is an abundant number, since it is smaller than the sum of its proper divisors (401091922).

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

389752550 is a wasteful number, since it uses less digits than its factorization.

389752550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708664 (or 708659 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 44.

The square root of 389752550 is about 19742.1516051316. The cubic root of 389752550 is about 730.4598028997.

The spelling of 389752550 in words is "three hundred eighty-nine million, seven hundred fifty-two thousand, five hundred fifty".