389661883 has 32 divisors (see below), whose sum is σ = 454035456. Its totient is φ = 331613568.

The previous prime is 389661869. The next prime is 389661887. The reversal of 389661883 is 388166983.

It is not a de Polignac number, because 389661883 - 2²¹ = 387564731 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389661883.

It is not an unprimeable number, because it can be changed into a prime (389661887) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1061566 + ... + 1061932.

It is an arithmetic number, because the mean of its divisors is an integer number (14188608).

Almost surely, 2^389661883 is an apocalyptic number.

389661883 is a deficient number, since it is larger than the sum of its proper divisors (64373573).

389661883 is a wasteful number, since it uses less digits than its factorization.

389661883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523.

The product of its digits is 1492992, while the sum is 52.

The square root of 389661883 is about 19739.8551919714. The cubic root of 389661883 is about 730.4031569286.

The spelling of 389661883 in words is "three hundred eighty-nine million, six hundred sixty-one thousand, eight hundred eighty-three".