65441909 has 16 divisors (see below), whose sum is σ = 75600000. Its totient is φ = 56137536.

The previous prime is 65441903. The next prime is 65441911. The reversal of 65441909 is 90914456.

It is not a de Polignac number, because 65441909 - 2²⁰ = 64393333 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 (65441903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10592 + ... + 15590.

It is an arithmetic number, because the mean of its divisors is an integer number (4725000).

Almost surely, 2^65441909 is an apocalyptic number.

It is an amenable number.

65441909 is a deficient number, since it is larger than the sum of its proper divisors (10158091).

65441909 is a wasteful number, since it uses less digits than its factorization.

65441909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5084.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 65441909 is about 8089.6173580708. The cubic root of 65441909 is about 402.9816955853.

The spelling of 65441909 in words is "sixty-five million, four hundred forty-one thousand, nine hundred nine".