389306933 has 16 divisors (see below), whose sum is σ = 415726080. Its totient is φ = 363859776.

The previous prime is 389306923. The next prime is 389306963. The reversal of 389306933 is 339603983.

It is not a de Polignac number, because 389306933 - 2¹⁰ = 389305909 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389306923) 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, 238466 + ... + 240092.

It is an arithmetic number, because the mean of its divisors is an integer number (25982880).

Almost surely, 2^389306933 is an apocalyptic number.

It is an amenable number.

389306933 is a deficient number, since it is larger than the sum of its proper divisors (26419147).

389306933 is a wasteful number, since it uses less digits than its factorization.

389306933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916.

The product of its (nonzero) digits is 314928, while the sum is 44.

The square root of 389306933 is about 19730.8624494724. The cubic root of 389306933 is about 730.1813104404.

The spelling of 389306933 in words is "three hundred eighty-nine million, three hundred six thousand, nine hundred thirty-three".