389281894 has 4 divisors (see below), whose sum is σ = 583922844. Its totient is φ = 194640946.

The previous prime is 389281889. The next prime is 389281897. The reversal of 389281894 is 498182983.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 498182983 = 19 ⋅26220157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389281897) 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 as a sum of consecutive naturals, namely, 97320472 + ... + 97320475.

It is an arithmetic number, because the mean of its divisors is an integer number (145980711).

Almost surely, 2^389281894 is an apocalyptic number.

389281894 is a deficient number, since it is larger than the sum of its proper divisors (194640950).

389281894 is a wasteful number, since it uses less digits than its factorization.

389281894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194640949.

The product of its digits is 995328, while the sum is 52.

The square root of 389281894 is about 19730.2279256982. The cubic root of 389281894 is about 730.1656557815.

The spelling of 389281894 in words is "three hundred eighty-nine million, two hundred eighty-one thousand, eight hundred ninety-four".