1389614886 has 64 divisors (see below), whose sum is σ = 3450988800. Its totient is φ = 410817600.

The previous prime is 1389614869. The next prime is 1389614887. The reversal of 1389614886 is 6884169831.

1389614886 is a `hidden beast` number, since 13 + 8 + 9 + 614 + 8 + 8 + 6 = 666.

It is a super-4 number, since 4×1389614886⁴ (a number of 38 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1389614887) 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, 4176 + ... + 52883.

It is an arithmetic number, because the mean of its divisors is an integer number (53921700).

Almost surely, 2^1389614886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389614886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725494400).

1389614886 is an abundant number, since it is smaller than the sum of its proper divisors (2061373914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389614886 is a wasteful number, since it uses less digits than its factorization.

1389614886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57122 (or 57116 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 1389614886 is about 37277.5386258267. The cubic root of 1389614886 is about 1115.9159521627.

Subtracting 1389614886 from its reverse (6884169831), we obtain a palindrome (5494554945).

It can be divided in two parts, 13896 and 14886, that added together give a palindrome (28782).

The spelling of 1389614886 in words is "one billion, three hundred eighty-nine million, six hundred fourteen thousand, eight hundred eighty-six".