389330947 has 4 divisors (see below), whose sum is σ = 389561800. Its totient is φ = 389100096.

The previous prime is 389330933. The next prime is 389330971. The reversal of 389330947 is 749033983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 389330947 - 2¹⁹ = 388806659 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389330897 and 389330906.

It is not an unprimeable number, because it can be changed into a prime (389330927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112878 + ... + 116275.

It is an arithmetic number, because the mean of its divisors is an integer number (97390450).

Almost surely, 2^389330947 is an apocalyptic number.

389330947 is a deficient number, since it is larger than the sum of its proper divisors (230853).

389330947 is a wasteful number, since it uses less digits than its factorization.

389330947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230852.

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 389330947 is about 19731.4709791237. The cubic root of 389330947 is about 730.1963236275.

The spelling of 389330947 in words is "three hundred eighty-nine million, three hundred thirty thousand, nine hundred forty-seven".