1389000140 has 36 divisors (see below), whose sum is σ = 3206185248. Its totient is φ = 505090080.

The previous prime is 1389000139. The next prime is 1389000161. The reversal of 1389000140 is 410009831.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284564 + ... + 289403.

Almost surely, 2^1389000140 is an apocalyptic number.

1389000140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389000140 is an abundant number, since it is smaller than the sum of its proper divisors (1817185108).

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

1389000140 is a wasteful number, since it uses less digits than its factorization.

1389000140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573998 (or 573985 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1389000140 is about 37269.2921853904. The cubic root of 1389000140 is about 1115.7513727387.

Adding to 1389000140 its reverse (410009831), we get a palindrome (1799009971).

The spelling of 1389000140 in words is "one billion, three hundred eighty-nine million, one hundred forty", and thus it is an aban number.