445840199 has 4 divisors (see below), whose sum is σ = 509531664. Its totient is φ = 382148736.

The previous prime is 445840183. The next prime is 445840207. The reversal of 445840199 is 991048544.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 445840199 - 2⁴ = 445840183 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 (445840139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31845722 + ... + 31845735.

It is an arithmetic number, because the mean of its divisors is an integer number (127382916).

Almost surely, 2^445840199 is an apocalyptic number.

445840199 is a deficient number, since it is larger than the sum of its proper divisors (63691465).

445840199 is an equidigital number, since it uses as much as digits as its factorization.

445840199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63691464.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 445840199 is about 21114.9283446570. The cubic root of 445840199 is about 763.9408636144.

The spelling of 445840199 in words is "four hundred forty-five million, eight hundred forty thousand, one hundred ninety-nine".