389449250 has 16 divisors (see below), whose sum is σ = 729049464. Its totient is φ = 155779600.

The previous prime is 389449171. The next prime is 389449253. The reversal of 389449250 is 52944983.

It can be written as a sum of positive squares in 4 ways, for example, as 200194201 + 189255049 = 14149^2 + 13757^2 .

It is not an unprimeable number, because it can be changed into a prime (389449253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778649 + ... + 779148.

Almost surely, 2^389449250 is an apocalyptic number.

389449250 is a deficient number, since it is larger than the sum of its proper divisors (339600214).

389449250 is a wasteful number, since it uses less digits than its factorization.

389449250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557814 (or 1557804 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 389449250 is about 19734.4685765794. The cubic root of 389449250 is about 730.2702758509.

The spelling of 389449250 in words is "three hundred eighty-nine million, four hundred forty-nine thousand, two hundred fifty".