13942739 has 4 divisors (see below), whose sum is σ = 13961640. Its totient is φ = 13923840.

The previous prime is 13942727. The next prime is 13942741. The reversal of 13942739 is 93724931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13942739 - 2¹⁶ = 13877203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13942759) 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, 8297 + ... + 9834.

It is an arithmetic number, because the mean of its divisors is an integer number (3490410).

Almost surely, 2^13942739 is an apocalyptic number.

13942739 is a deficient number, since it is larger than the sum of its proper divisors (18901).

13942739 is an equidigital number, since it uses as much as digits as its factorization.

13942739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18900.

The product of its digits is 40824, while the sum is 38.

The square root of 13942739 is about 3733.9977236201. The cubic root of 13942739 is about 240.6851889463.

The spelling of 13942739 in words is "thirteen million, nine hundred forty-two thousand, seven hundred thirty-nine".