104144509 has 4 divisors (see below), whose sum is σ = 119022304. Its totient is φ = 89266716.

The previous prime is 104144503. The next prime is 104144519. The reversal of 104144509 is 905441401.

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.

It is not a de Polignac number, because 104144509 - 2⁵ = 104144477 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 (104144503) 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, 7438887 + ... + 7438900.

It is an arithmetic number, because the mean of its divisors is an integer number (29755576).

Almost surely, 2^104144509 is an apocalyptic number.

It is an amenable number.

104144509 is a deficient number, since it is larger than the sum of its proper divisors (14877795).

104144509 is an equidigital number, since it uses as much as digits as its factorization.

104144509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14877794.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 104144509 is about 10205.1217043208. The cubic root of 104144509 is about 470.4846502145.

It can be divided in two parts, 104144 and 509, that added together give a triangular number (104653 = T₄₅₇).

The spelling of 104144509 in words is "one hundred four million, one hundred forty-four thousand, five hundred nine".