389509055 has 16 divisors (see below), whose sum is σ = 505491840. Its totient is φ = 286422528.

The previous prime is 389509019. The next prime is 389509067. The reversal of 389509055 is 550905983.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 389509055 - 2⁸ = 389508799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389508997 and 389509015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2999 + ... + 28071.

It is an arithmetic number, because the mean of its divisors is an integer number (31593240).

Almost surely, 2^389509055 is an apocalyptic number.

389509055 is a deficient number, since it is larger than the sum of its proper divisors (115982785).

389509055 is a wasteful number, since it uses less digits than its factorization.

389509055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25330.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 389509055 is about 19735.9837606338. The cubic root of 389509055 is about 730.3076547721.

The spelling of 389509055 in words is "three hundred eighty-nine million, five hundred nine thousand, fifty-five".