14399980 has 48 divisors (see below), whose sum is σ = 35058240. Its totient is φ = 4866048.

The previous prime is 14399971. The next prime is 14399981. The reversal of 14399980 is 8999341.

It is not an unprimeable number, because it can be changed into a prime (14399981) 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, 9516 + ... + 10924.

It is an arithmetic number, because the mean of its divisors is an integer number (730380).

Almost surely, 2^14399980 is an apocalyptic number.

14399980 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 14399980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17529120).

14399980 is an abundant number, since it is smaller than the sum of its proper divisors (20658260).

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

14399980 is a wasteful number, since it uses less digits than its factorization.

14399980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1498 (or 1496 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 14399980 is about 3794.7305569698. The cubic root of 14399980 is about 243.2879671895.

The spelling of 14399980 in words is "fourteen million, three hundred ninety-nine thousand, nine hundred eighty".