445831938 has 20 divisors (see below), whose sum is σ = 998994150. Its totient is φ = 148610592.

The previous prime is 445831831. The next prime is 445831961. The reversal of 445831938 is 839138544.

445831938 is a `hidden beast` number, since 4 + 458 + 3 + 193 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 244390689 + 201441249 = 15633^2 + 14193^2 .

It is a super-2 number, since 2×445831938² = 397532233881671688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 445831893 and 445831902.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 1375863 + ... + 1376186.

Almost surely, 2^445831938 is an apocalyptic number.

445831938 is an abundant number, since it is smaller than the sum of its proper divisors (553162212).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

445831938 is a wasteful number, since it uses less digits than its factorization.

445831938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752063 (or 2752054 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 445831938 is about 21114.7327238590. The cubic root of 445831938 is about 763.9361452165.

The spelling of 445831938 in words is "four hundred forty-five million, eight hundred thirty-one thousand, nine hundred thirty-eight".