14439940 has 12 divisors (see below), whose sum is σ = 30323916. Its totient is φ = 5775968.

The previous prime is 14439917. The next prime is 14439947. The reversal of 14439940 is 4993441.

It can be written as a sum of positive squares in 2 ways, for example, as 7214596 + 7225344 = 2686^2 + 2688^2 .

It is a junction number, because it is equal to n+sod(n) for n = 14439896 and 14439905.

It is not an unprimeable number, because it can be changed into a prime (14439947) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 360979 + ... + 361018.

It is an arithmetic number, because the mean of its divisors is an integer number (2526993).

Almost surely, 2^14439940 is an apocalyptic number.

14439940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14439940 is an abundant number, since it is smaller than the sum of its proper divisors (15883976).

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

14439940 is a wasteful number, since it uses less digits than its factorization.

14439940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722006 (or 722004 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 14439940 is about 3799.9921052550. The cubic root of 14439940 is about 243.5128010282.

The spelling of 14439940 in words is "fourteen million, four hundred thirty-nine thousand, nine hundred forty".