13944739 has 8 divisors (see below), whose sum is σ = 14595840. Its totient is φ = 13297416.

The previous prime is 13944713. The next prime is 13944757. The reversal of 13944739 is 93744931.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13944739 - 2¹³ = 13936547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13944769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8914 + ... + 10360.

It is an arithmetic number, because the mean of its divisors is an integer number (1824480).

Almost surely, 2^13944739 is an apocalyptic number.

13944739 is a deficient number, since it is larger than the sum of its proper divisors (651101).

13944739 is a wasteful number, since it uses less digits than its factorization.

13944739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889.

The product of its digits is 81648, while the sum is 40.

The square root of 13944739 is about 3734.2655234999. The cubic root of 13944739 is about 240.6966966651.

The spelling of 13944739 in words is "thirteen million, nine hundred forty-four thousand, seven hundred thirty-nine".