14398440 has 128 divisors (see below), whose sum is σ = 50353920. Its totient is φ = 3225600.

The previous prime is 14398411. The next prime is 14398453. The reversal of 14398440 is 4489341.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51100 + ... + 51380.

It is an arithmetic number, because the mean of its divisors is an integer number (393390).

Almost surely, 2^14398440 is an apocalyptic number.

14398440 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 14398440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25176960).

14398440 is an abundant number, since it is smaller than the sum of its proper divisors (35955480).

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

14398440 is a wasteful number, since it uses less digits than its factorization.

14398440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 359 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 14398440 is about 3794.5276385869. The cubic root of 14398440 is about 243.2792941028.

Subtracting from 14398440 its reverse (4489341), we obtain a palindrome (9909099).

The spelling of 14398440 in words is "fourteen million, three hundred ninety-eight thousand, four hundred forty".