389556011 has 4 divisors (see below), whose sum is σ = 419521872. Its totient is φ = 359590152.

The previous prime is 389556001. The next prime is 389556059. The reversal of 389556011 is 110655983.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389556011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (389556001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14982911 + ... + 14982936.

It is an arithmetic number, because the mean of its divisors is an integer number (104880468).

Almost surely, 2^389556011 is an apocalyptic number.

389556011 is a deficient number, since it is larger than the sum of its proper divisors (29965861).

389556011 is a wasteful number, since it uses less digits than its factorization.

389556011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29965860.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 389556011 is about 19737.1733285190. The cubic root of 389556011 is about 730.3370002160.

The spelling of 389556011 in words is "three hundred eighty-nine million, five hundred fifty-six thousand, eleven".