389121033 has 16 divisors (see below), whose sum is σ = 595316736. Its totient is φ = 221466000.

The previous prime is 389121017. The next prime is 389121067. The reversal of 389121033 is 330121983.

It is not a de Polignac number, because 389121033 - 2⁴ = 389121017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389121133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31641 + ... + 42182.

It is an arithmetic number, because the mean of its divisors is an integer number (37207296).

Almost surely, 2^389121033 is an apocalyptic number.

It is an amenable number.

389121033 is a deficient number, since it is larger than the sum of its proper divisors (206195703).

389121033 is a wasteful number, since it uses less digits than its factorization.

389121033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74084.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 389121033 is about 19726.1509930346. The cubic root of 389121033 is about 730.0650676973.

The spelling of 389121033 in words is "three hundred eighty-nine million, one hundred twenty-one thousand, thirty-three".