445534409 has 4 divisors (see below), whose sum is σ = 448485120. Its totient is φ = 442583700.

The previous prime is 445534399. The next prime is 445534433. The reversal of 445534409 is 904435544.

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 a cyclic number.

It is not a de Polignac number, because 445534409 - 2⁴ = 445534393 is a prime.

It is a super-4 number, since 4×445534409⁴ (a number of 36 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445534459) 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 3 ways as a sum of consecutive naturals, for example, 1475129 + ... + 1475430.

It is an arithmetic number, because the mean of its divisors is an integer number (112121280).

Almost surely, 2^445534409 is an apocalyptic number.

It is an amenable number.

445534409 is a deficient number, since it is larger than the sum of its proper divisors (2950711).

445534409 is a wasteful number, since it uses less digits than its factorization.

445534409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2950710.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 445534409 is about 21107.6860171834. The cubic root of 445534409 is about 763.7661680579.

The spelling of 445534409 in words is "four hundred forty-five million, five hundred thirty-four thousand, four hundred nine".