389252549 has 4 divisors (see below), whose sum is σ = 444860064. Its totient is φ = 333645036.

The previous prime is 389252531. The next prime is 389252581. The reversal of 389252549 is 945252983.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389252549 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389252749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27803747 + ... + 27803760.

It is an arithmetic number, because the mean of its divisors is an integer number (111215016).

Almost surely, 2^389252549 is an apocalyptic number.

It is an amenable number.

389252549 is a deficient number, since it is larger than the sum of its proper divisors (55607515).

389252549 is an equidigital number, since it uses as much as digits as its factorization.

389252549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55607514.

The product of its digits is 777600, while the sum is 47.

The square root of 389252549 is about 19729.4842558035. The cubic root of 389252549 is about 730.1473081094.

The spelling of 389252549 in words is "three hundred eighty-nine million, two hundred fifty-two thousand, five hundred forty-nine".