14021609 has 4 divisors (see below), whose sum is σ = 16024704. Its totient is φ = 12018516.

The previous prime is 14021603. The next prime is 14021629. The reversal of 14021609 is 90612041.

It is a happy number.

14021609 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90612041 = 13 ⋅6970157.

It is a cyclic number.

It is not a de Polignac number, because 14021609 - 2⁴ = 14021593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14021603) 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, 1001537 + ... + 1001550.

It is an arithmetic number, because the mean of its divisors is an integer number (4006176).

Almost surely, 2^14021609 is an apocalyptic number.

It is an amenable number.

14021609 is a deficient number, since it is larger than the sum of its proper divisors (2003095).

14021609 is an equidigital number, since it uses as much as digits as its factorization.

14021609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003094.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 14021609 is about 3744.5438974593. The cubic root of 14021609 is about 241.1381644927.

Adding to 14021609 its product of nonzero digits (432), we get a palindrome (14022041).

The spelling of 14021609 in words is "fourteen million, twenty-one thousand, six hundred nine".