389664777 has 8 divisors (see below), whose sum is σ = 519661440. Its totient is φ = 259722320.

The previous prime is 389664731. The next prime is 389664817. The reversal of 389664777 is 777466983.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 389664777 - 2⁶ = 389664713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389663777) 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 7 ways as a sum of consecutive naturals, for example, 8224 + ... + 29102.

It is an arithmetic number, because the mean of its divisors is an integer number (64957680).

Almost surely, 2^389664777 is an apocalyptic number.

It is an amenable number.

389664777 is a deficient number, since it is larger than the sum of its proper divisors (129996663).

389664777 is a wasteful number, since it uses less digits than its factorization.

389664777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27103.

The product of its digits is 10668672, while the sum is 57.

The square root of 389664777 is about 19739.9284953112. The cubic root of 389664777 is about 730.4049651471.

The spelling of 389664777 in words is "three hundred eighty-nine million, six hundred sixty-four thousand, seven hundred seventy-seven".