389259944649 has 45 divisors (see below), whose sum is σ = 586248126519. Its totient is φ = 257399071920.

The previous prime is 389259944641. The next prime is 389259944653. The reversal of 389259944649 is 946449952983.

The square root of 389259944649 is 623907.

It is a perfect power (a square), and thus also a powerful number.

389259944649 is a `hidden beast` number, since 3 + 8 + 92 + 5 + 99 + 446 + 4 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4289333049 + 384970611600 = 65493^2 + 620460^2 .

It is not a de Polignac number, because 389259944649 - 2³ = 389259944641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389259944641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1016344312 + ... + 1016344694.

Almost surely, 2^389259944649 is an apocalyptic number.

389259944649 is the 623907-th square number.

389259944649 is the 311954-th centered octagonal number.

It is an amenable number.

389259944649 is a deficient number, since it is larger than the sum of its proper divisors (196988181870).

389259944649 is an frugal number, since it uses more digits than its factorization.

389259944649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1140 (or 567 counting only the distinct ones).

The product of its digits is 604661760, while the sum is 72.

The spelling of 389259944649 in words is "three hundred eighty-nine billion, two hundred fifty-nine million, nine hundred forty-four thousand, six hundred forty-nine".