445999999 has 8 divisors (see below), whose sum is σ = 457592960. Its totient is φ = 434462616.

The previous prime is 445999993. The next prime is 446000011. The reversal of 445999999 is 999999544.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445999999 is a prime.

It is a Duffinian number.

445999999 is a modest number, since divided by 99999 gives 4459 as remainder.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445999993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2614 + ... + 29980.

It is an arithmetic number, because the mean of its divisors is an integer number (57199120).

Almost surely, 2^445999999 is an apocalyptic number.

445999999 is a deficient number, since it is larger than the sum of its proper divisors (11592961).

445999999 is a wasteful number, since it uses less digits than its factorization.

445999999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27789.

The product of its digits is 42515280, while the sum is 67.

The square root of 445999999 is about 21118.7120582672. The cubic root of 445999999 is about 764.0321243905.

The spelling of 445999999 in words is "four hundred forty-five million, nine hundred ninety-nine thousand, nine hundred ninety-nine".