14913509 has 4 divisors (see below), whose sum is σ = 16060716. Its totient is φ = 13766304.

The previous prime is 14913487. The next prime is 14913517. The reversal of 14913509 is 90531941.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6630625 + 8282884 = 2575^2 + 2878^2 .

It is a cyclic number.

It is not a de Polignac number, because 14913509 - 2¹² = 14909413 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 (14913529) 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, 573584 + ... + 573609.

It is an arithmetic number, because the mean of its divisors is an integer number (4015179).

Almost surely, 2^14913509 is an apocalyptic number.

It is an amenable number.

14913509 is a deficient number, since it is larger than the sum of its proper divisors (1147207).

14913509 is a wasteful number, since it uses less digits than its factorization.

14913509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1147206.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 14913509 is about 3861.8012636592. The cubic root of 14913509 is about 246.1462820016.

The spelling of 14913509 in words is "fourteen million, nine hundred thirteen thousand, five hundred nine".