445644111 has 16 divisors (see below), whose sum is σ = 648678528. Its totient is φ = 269892000.

The previous prime is 445644097. The next prime is 445644139. The reversal of 445644111 is 111446544.

It is not a de Polignac number, because 445644111 - 2¹⁸ = 445381967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (445644161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50961 + ... + 59061.

It is an arithmetic number, because the mean of its divisors is an integer number (40542408).

Almost surely, 2^445644111 is an apocalyptic number.

445644111 is a deficient number, since it is larger than the sum of its proper divisors (203034417).

445644111 is a wasteful number, since it uses less digits than its factorization.

445644111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9782.

The product of its digits is 7680, while the sum is 30.

The square root of 445644111 is about 21110.2844841087. The cubic root of 445644111 is about 763.8288491877.

The spelling of 445644111 in words is "four hundred forty-five million, six hundred forty-four thousand, one hundred eleven".