445827197 has 4 divisors (see below), whose sum is σ = 446043516. Its totient is φ = 445610880.

The previous prime is 445827119. The next prime is 445827199. The reversal of 445827197 is 791728544.

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

It can be written as a sum of positive squares in 2 ways, for example, as 191711716 + 254115481 = 13846^2 + 15941^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-445827197 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 (445827199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105038 + ... + 109199.

It is an arithmetic number, because the mean of its divisors is an integer number (111510879).

Almost surely, 2^445827197 is an apocalyptic number.

It is an amenable number.

445827197 is a deficient number, since it is larger than the sum of its proper divisors (216319).

445827197 is a wasteful number, since it uses less digits than its factorization.

445827197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216318.

The product of its digits is 564480, while the sum is 47.

The square root of 445827197 is about 21114.6204559779. The cubic root of 445827197 is about 763.9334372946.

The spelling of 445827197 in words is "four hundred forty-five million, eight hundred twenty-seven thousand, one hundred ninety-seven".