13450509 has 8 divisors (see below), whose sum is σ = 19926720. Its totient is φ = 8966988.

The previous prime is 13450487. The next prime is 13450511. The reversal of 13450509 is 90505431.

It is not a de Polignac number, because 13450509 - 2⁵ = 13450477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 498167 = 13450509 / (1 + 3 + 4 + 5 + 0 + 5 + 0 + 9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13450589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249057 + ... + 249110.

It is an arithmetic number, because the mean of its divisors is an integer number (2490840).

Almost surely, 2^13450509 is an apocalyptic number.

It is an amenable number.

13450509 is a deficient number, since it is larger than the sum of its proper divisors (6476211).

13450509 is an equidigital number, since it uses as much as digits as its factorization.

13450509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498176 (or 498170 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 13450509 is about 3667.4935582766. The cubic root of 13450509 is about 237.8188308904.

The spelling of 13450509 in words is "thirteen million, four hundred fifty thousand, five hundred nine".