14072509 has 4 divisors (see below), whose sum is σ = 15351840. Its totient is φ = 12793180.

The previous prime is 14072491. The next prime is 14072519. The reversal of 14072509 is 90527041.

It is a happy number.

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: 90527041 = 11 ⋅8229731.

It is a cyclic number.

It is not a de Polignac number, because 14072509 - 2⁹ = 14071997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14072519) 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, 639649 + ... + 639670.

It is an arithmetic number, because the mean of its divisors is an integer number (3837960).

Almost surely, 2^14072509 is an apocalyptic number.

It is an amenable number.

14072509 is a deficient number, since it is larger than the sum of its proper divisors (1279331).

14072509 is a wasteful number, since it uses less digits than its factorization.

14072509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279330.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 14072509 is about 3751.3342959539. The cubic root of 14072509 is about 241.4295982490.

It can be divided in two parts, 1407 and 2509, that added together give a triangular number (3916 = T₈₈).

The spelling of 14072509 in words is "fourteen million, seventy-two thousand, five hundred nine".