389493853 has 4 divisors (see below), whose sum is σ = 445135840. Its totient is φ = 333851868.

The previous prime is 389493833. The next prime is 389493883. The reversal of 389493853 is 358394983.

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, and also an emirpimes, since its reverse is a distinct semiprime: 358394983 = 17789 ⋅20147.

It is not a de Polignac number, because 389493853 - 2⁵ = 389493821 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 389493853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389493823) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 27820983 + ... + 27820996.

It is an arithmetic number, because the mean of its divisors is an integer number (111283960).

Almost surely, 2^389493853 is an apocalyptic number.

It is an amenable number.

389493853 is a deficient number, since it is larger than the sum of its proper divisors (55641987).

389493853 is an equidigital number, since it uses as much as digits as its factorization.

389493853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55641986.

The product of its digits is 2799360, while the sum is 52.

The square root of 389493853 is about 19735.5986227933. The cubic root of 389493853 is about 730.2981536824.

The spelling of 389493853 in words is "three hundred eighty-nine million, four hundred ninety-three thousand, eight hundred fifty-three".