1389980920 has 32 divisors (see below), whose sum is σ = 3128641200. Its totient is φ = 555781888.

The previous prime is 1389980863. The next prime is 1389980939. The reversal of 1389980920 is 290899831.

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 7 ways as a sum of consecutive naturals, for example, 141612 + ... + 151108.

Almost surely, 2^1389980920 is an apocalyptic number.

1389980920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1389980920 is an abundant number, since it is smaller than the sum of its proper divisors (1738660280).

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

1389980920 is a wasteful number, since it uses less digits than its factorization.

1389980920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13167 (or 13163 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 49.

The square root of 1389980920 is about 37282.4478810070. The cubic root of 1389980920 is about 1116.0139235083.

The spelling of 1389980920 in words is "one billion, three hundred eighty-nine million, nine hundred eighty thousand, nine hundred twenty".