13944940 has 24 divisors (see below), whose sum is σ = 30295440. Its totient is φ = 5385408.

The previous prime is 13944919. The next prime is 13944941. The reversal of 13944940 is 4944931.

It is a super-2 number, since 2×13944940² = 388922703207200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13944896 and 13944905.

It is not an unprimeable number, because it can be changed into a prime (13944941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11442 + ... + 12601.

It is an arithmetic number, because the mean of its divisors is an integer number (1262310).

Almost surely, 2^13944940 is an apocalyptic number.

13944940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13944940 is an abundant number, since it is smaller than the sum of its proper divisors (16350500).

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

13944940 is a wasteful number, since it uses less digits than its factorization.

13944940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24081 (or 24079 counting only the distinct ones).

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

The square root of 13944940 is about 3734.2924363258. The cubic root of 13944940 is about 240.6978531300.

Subtracting from 13944940 its reverse (4944931), we obtain a palindrome (9000009).

It can be divided in two parts, 13944 and 940, that added together give a square (14884 = 122²).

The spelling of 13944940 in words is "thirteen million, nine hundred forty-four thousand, nine hundred forty".