14220509 has 8 divisors (see below), whose sum is σ = 15007680. Its totient is φ = 13447456.

The previous prime is 14220439. The next prime is 14220533. The reversal of 14220509 is 90502241.

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

It is not a de Polignac number, because 14220509 - 2⁸ = 14220253 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14220539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1427 + ... + 5520.

It is an arithmetic number, because the mean of its divisors is an integer number (1875960).

Almost surely, 2^14220509 is an apocalyptic number.

It is an amenable number.

14220509 is a deficient number, since it is larger than the sum of its proper divisors (787171).

14220509 is an equidigital number, since it uses as much as digits as its factorization.

14220509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7059.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 14220509 is about 3771.0090161653. The cubic root of 14220509 is about 242.2730167847.

The spelling of 14220509 in words is "fourteen million, two hundred twenty thousand, five hundred nine".