389434255 has 16 divisors (see below), whose sum is σ = 534426624. Its totient is φ = 266868000.

The previous prime is 389434237. The next prime is 389434267. The reversal of 389434255 is 552434983.

It is not a de Polignac number, because 389434255 - 2¹⁵ = 389401487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76314 + ... + 81256.

It is an arithmetic number, because the mean of its divisors is an integer number (33401664).

Almost surely, 2^389434255 is an apocalyptic number.

389434255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

389434255 is a deficient number, since it is larger than the sum of its proper divisors (144992369).

389434255 is a wasteful number, since it uses less digits than its factorization.

389434255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7206.

The product of its digits is 518400, while the sum is 43.

The square root of 389434255 is about 19734.0886539004. The cubic root of 389434255 is about 730.2609031763.

The spelling of 389434255 in words is "three hundred eighty-nine million, four hundred thirty-four thousand, two hundred fifty-five".