389191442 has 8 divisors (see below), whose sum is σ = 583942716. Its totient is φ = 194543872.

The previous prime is 389191433. The next prime is 389191447. The reversal of 389191442 is 244191983.

It can be written as a sum of positive squares in 2 ways, for example, as 382632721 + 6558721 = 19561^2 + 2561^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 389191442.

It is not an unprimeable number, because it can be changed into a prime (389191447) 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, 15743 + ... + 32034.

Almost surely, 2^389191442 is an apocalyptic number.

389191442 is a deficient number, since it is larger than the sum of its proper divisors (194751274).

389191442 is a wasteful number, since it uses less digits than its factorization.

389191442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51852.

The product of its digits is 62208, while the sum is 41.

The square root of 389191442 is about 19727.9355736985. The cubic root of 389191442 is about 730.1090986002.

The spelling of 389191442 in words is "three hundred eighty-nine million, one hundred ninety-one thousand, four hundred forty-two".