14400440 has 32 divisors (see below), whose sum is σ = 32510160. Its totient is φ = 5740800.

The previous prime is 14400431. The next prime is 14400457. The reversal of 14400440 is 4400441.

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20495 + ... + 21185.

Almost surely, 2^14400440 is an apocalyptic number.

14400440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14400440 is an abundant number, since it is smaller than the sum of its proper divisors (18109720).

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

14400440 is a wasteful number, since it uses less digits than its factorization.

14400440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223 (or 1219 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 14400440 is about 3794.7911668496. The cubic root of 14400440 is about 243.2905577318.

Adding to 14400440 its reverse (4400441), we get a palindrome (18800881).

Subtracting from 14400440 its reverse (4400441), we obtain a palindrome (9999999).

The spelling of 14400440 in words is "fourteen million, four hundred thousand, four hundred forty".