445134509 has 16 divisors (see below), whose sum is σ = 464686848. Its totient is φ = 426108672.

The previous prime is 445134497. The next prime is 445134517. The reversal of 445134509 is 905431544.

It is a cyclic number.

It is not a de Polignac number, because 445134509 - 2¹⁶ = 445068973 is a prime.

It is a super-2 number, since 2×445134509² = 396289462205342162, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445134539) 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, 469574 + ... + 470520.

It is an arithmetic number, because the mean of its divisors is an integer number (29042928).

Almost surely, 2^445134509 is an apocalyptic number.

It is an amenable number.

445134509 is a deficient number, since it is larger than the sum of its proper divisors (19552339).

445134509 is a wasteful number, since it uses less digits than its factorization.

445134509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1204.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 445134509 is about 21098.2110379056. The cubic root of 445134509 is about 763.5375874949.

The spelling of 445134509 in words is "four hundred forty-five million, one hundred thirty-four thousand, five hundred nine".