444545505 has 24 divisors (see below), whose sum is σ = 786943872. Its totient is φ = 232045344.

The previous prime is 444545443. The next prime is 444545509. The reversal of 444545505 is 505545444.

It is not a de Polignac number, because 444545505 - 2⁶ = 444545441 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 444545505.

It is not an unprimeable number, because it can be changed into a prime (444545509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102979 + ... + 107208.

It is an arithmetic number, because the mean of its divisors is an integer number (32789328).

Almost surely, 2^444545505 is an apocalyptic number.

444545505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

444545505 is a deficient number, since it is larger than the sum of its proper divisors (342398367).

444545505 is a wasteful number, since it uses less digits than its factorization.

444545505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210245 (or 210242 counting only the distinct ones).

The product of its (nonzero) digits is 160000, while the sum is 36.

The square root of 444545505 is about 21084.2477930800. The cubic root of 444545505 is about 763.2006667139.

The spelling of 444545505 in words is "four hundred forty-four million, five hundred forty-five thousand, five hundred five".