445211811 has 12 divisors (see below), whose sum is σ = 701546040. Its totient is φ = 269825280.

The previous prime is 445211807. The next prime is 445211831. The reversal of 445211811 is 118112544.

It is a happy number.

445211811 is a `hidden beast` number, since 445 + 211 + 8 + 1 + 1 = 666.

It is not a de Polignac number, because 445211811 - 2² = 445211807 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445211831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2248446 + ... + 2248643.

It is an arithmetic number, because the mean of its divisors is an integer number (58462170).

Almost surely, 2^445211811 is an apocalyptic number.

445211811 is a deficient number, since it is larger than the sum of its proper divisors (256334229).

445211811 is a wasteful number, since it uses less digits than its factorization.

445211811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4497106 (or 4497103 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 445211811 is about 21100.0429146483. The cubic root of 445211811 is about 763.5817835488.

The spelling of 445211811 in words is "four hundred forty-five million, two hundred eleven thousand, eight hundred eleven".