389251663 has 16 divisors (see below), whose sum is σ = 408385152. Its totient is φ = 370656000.

The previous prime is 389251649. The next prime is 389251673. The reversal of 389251663 is 366152983.

It is a cyclic number.

It is not a de Polignac number, because 389251663 - 2⁹ = 389251151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389251633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 588553 + ... + 589213.

It is an arithmetic number, because the mean of its divisors is an integer number (25524072).

Almost surely, 2^389251663 is an apocalyptic number.

389251663 is a deficient number, since it is larger than the sum of its proper divisors (19133489).

389251663 is a wasteful number, since it uses less digits than its factorization.

389251663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its digits is 233280, while the sum is 43.

The square root of 389251663 is about 19729.4618020867. The cubic root of 389251663 is about 730.1467541323.

It can be divided in two parts, 3892 and 51663, that added together give a palindrome (55555).

The spelling of 389251663 in words is "three hundred eighty-nine million, two hundred fifty-one thousand, six hundred sixty-three".