445184009 has 2 divisors, whose sum is σ = 445184010. Its totient is φ = 445184008.

The previous prime is 445183961. The next prime is 445184011. The reversal of 445184009 is 900481544.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 439824784 + 5359225 = 20972^2 + 2315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445184009 is a prime.

Together with 445184011, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 445184009.

It is not a weakly prime, because it can be changed into another prime (445184099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222592004 + 222592005.

It is an arithmetic number, because the mean of its divisors is an integer number (222592005).

Almost surely, 2^445184009 is an apocalyptic number.

It is an amenable number.

445184009 is a deficient number, since it is larger than the sum of its proper divisors (1).

445184009 is an equidigital number, since it uses as much as digits as its factorization.

445184009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 445184009 is about 21099.3840905369. The cubic root of 445184009 is about 763.5658888352.

The spelling of 445184009 in words is "four hundred forty-five million, one hundred eighty-four thousand, nine".