389503725 has 24 divisors (see below), whose sum is σ = 693518112. Its totient is φ = 191755200.

The previous prime is 389503721. The next prime is 389503729. The reversal of 389503725 is 527305983.

It is an interprime number because it is at equal distance from previous prime (389503721) and next prime (389503729).

It is not a de Polignac number, because 389503725 - 2² = 389503721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389503721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 198771 + ... + 200720.

It is an arithmetic number, because the mean of its divisors is an integer number (28896588).

Almost surely, 2^389503725 is an apocalyptic number.

It is an amenable number.

389503725 is a deficient number, since it is larger than the sum of its proper divisors (304014387).

389503725 is a wasteful number, since it uses less digits than its factorization.

389503725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399517 (or 399512 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The square root of 389503725 is about 19735.8487276327. The cubic root of 389503725 is about 730.3043236065.

The spelling of 389503725 in words is "three hundred eighty-nine million, five hundred three thousand, seven hundred twenty-five".