14219749 has 2 divisors, whose sum is σ = 14219750. Its totient is φ = 14219748.

The previous prime is 14219747. The next prime is 14219753. The reversal of 14219749 is 94791241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11390625 + 2829124 = 3375^2 + 1682^2 .

It is a cyclic number.

It is not a de Polignac number, because 14219749 - 2¹ = 14219747 is a prime.

Together with 14219747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14219747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7109874 + 7109875.

It is an arithmetic number, because the mean of its divisors is an integer number (7109875).

Almost surely, 2^14219749 is an apocalyptic number.

It is an amenable number.

14219749 is a deficient number, since it is larger than the sum of its proper divisors (1).

14219749 is an equidigital number, since it uses as much as digits as its factorization.

14219749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 14219749 is about 3770.9082460330. The cubic root of 14219749 is about 242.2687006998.

It can be divided in two parts, 142 and 19749, that added together give a palindrome (19891).

The spelling of 14219749 in words is "fourteen million, two hundred nineteen thousand, seven hundred forty-nine".