445439794 has 4 divisors (see below), whose sum is σ = 668159694. Its totient is φ = 222719896.

The previous prime is 445439791. The next prime is 445439803. The reversal of 445439794 is 497934544.

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

It can be written as a sum of positive squares in only one way, i.e., 445421025 + 18769 = 21105^2 + 137^2 .

It is a super-2 number, since 2×445439794² = 396833220157524872, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (445439791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111359947 + ... + 111359950.

Almost surely, 2^445439794 is an apocalyptic number.

445439794 is a deficient number, since it is larger than the sum of its proper divisors (222719900).

445439794 is a wasteful number, since it uses less digits than its factorization.

445439794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222719899.

The product of its digits is 2177280, while the sum is 49.

The square root of 445439794 is about 21105.4446529800. Note that the first 3 decimals coincide. The cubic root of 445439794 is about 763.7120990190.

The spelling of 445439794 in words is "four hundred forty-five million, four hundred thirty-nine thousand, seven hundred ninety-four".