13889980 has 48 divisors (see below), whose sum is σ = 32203584. Its totient is φ = 4999680.

The previous prime is 13889951. The next prime is 13889983. The reversal of 13889980 is 8998831.

It is a self number, because there is not a number n which added to its sum of digits gives 13889980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13889983) 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, 10009 + ... + 11311.

It is an arithmetic number, because the mean of its divisors is an integer number (670908).

Almost surely, 2^13889980 is an apocalyptic number.

13889980 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 13889980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16101792).

13889980 is an abundant number, since it is smaller than the sum of its proper divisors (18313604).

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

13889980 is a wasteful number, since it uses less digits than its factorization.

13889980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1366 (or 1364 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 46.

The square root of 13889980 is about 3726.9263475416. The cubic root of 13889980 is about 240.3812228379.

The spelling of 13889980 in words is "thirteen million, eight hundred eighty-nine thousand, nine hundred eighty".