389891193 has 16 divisors (see below), whose sum is σ = 544911360. Its totient is φ = 247501584.

The previous prime is 389891129. The next prime is 389891197. The reversal of 389891193 is 391198983.

It is a happy number.

It is not a de Polignac number, because 389891193 - 2⁶ = 389891129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389891197) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718 + ... + 28056.

It is an arithmetic number, because the mean of its divisors is an integer number (34056960).

Almost surely, 2^389891193 is an apocalyptic number.

It is an amenable number.

389891193 is a deficient number, since it is larger than the sum of its proper divisors (155020167).

389891193 is a wasteful number, since it uses less digits than its factorization.

389891193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25588.

The product of its digits is 419904, while the sum is 51.

The square root of 389891193 is about 19745.6626376529. The cubic root of 389891193 is about 730.5464058247.

The spelling of 389891193 in words is "three hundred eighty-nine million, eight hundred ninety-one thousand, one hundred ninety-three".