389481009 has 16 divisors (see below), whose sum is σ = 523440000. Its totient is φ = 257596416.

The previous prime is 389480989. The next prime is 389481013. The reversal of 389481009 is 900184983.

It is not a de Polignac number, because 389481009 - 2⁷ = 389480881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389481109) 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 15 ways as a sum of consecutive naturals, for example, 267327 + ... + 268779.

It is an arithmetic number, because the mean of its divisors is an integer number (32715000).

Almost surely, 2^389481009 is an apocalyptic number.

It is an amenable number.

389481009 is a deficient number, since it is larger than the sum of its proper divisors (133958991).

389481009 is a wasteful number, since it uses less digits than its factorization.

389481009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 389481009 is about 19735.2732182760. The cubic root of 389481009 is about 730.2901261252.

The spelling of 389481009 in words is "three hundred eighty-nine million, four hundred eighty-one thousand, nine".