1389863800 has 96 divisors (see below), whose sum is σ = 3491182800. Its totient is φ = 511534080.

The previous prime is 1389863791. The next prime is 1389863861. The reversal of 1389863800 is 83689831.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 1062747 + ... + 1064053.

Almost surely, 2^1389863800 is an apocalyptic number.

1389863800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1389863800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1745591400).

1389863800 is an abundant number, since it is smaller than the sum of its proper divisors (2101319000).

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

1389863800 is a wasteful number, since it uses less digits than its factorization.

1389863800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745 (or 1736 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1389863800 is about 37280.8771356040. The cubic root of 1389863800 is about 1115.9825774613.

The spelling of 1389863800 in words is "one billion, three hundred eighty-nine million, eight hundred sixty-three thousand, eight hundred".