389708771 has 8 divisors (see below), whose sum is σ = 394665984. Its totient is φ = 384781320.

The previous prime is 389708741. The next prime is 389708773. The reversal of 389708771 is 177807983.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389708771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389708773) 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 7 ways as a sum of consecutive naturals, for example, 19526 + ... + 34068.

It is an arithmetic number, because the mean of its divisors is an integer number (49333248).

Almost surely, 2^389708771 is an apocalyptic number.

389708771 is a deficient number, since it is larger than the sum of its proper divisors (4957213).

389708771 is a wasteful number, since it uses less digits than its factorization.

389708771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14881.

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 389708771 is about 19741.0428042695. The cubic root of 389708771 is about 730.4324522152.

The spelling of 389708771 in words is "three hundred eighty-nine million, seven hundred eight thousand, seven hundred seventy-one".