994440841 has 4 divisors (see below), whose sum is σ = 995060500. Its totient is φ = 993821184.

The previous prime is 994440817. The next prime is 994440869. The reversal of 994440841 is 148044499.

It is a happy number.

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 936604816 + 57836025 = 30604^2 + 7605^2 .

It is a cyclic number.

It is not a de Polignac number, because 994440841 - 2¹¹ = 994438793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (994440871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307416 + ... + 310633.

It is an arithmetic number, because the mean of its divisors is an integer number (248765125).

Almost surely, 2^994440841 is an apocalyptic number.

It is an amenable number.

994440841 is a deficient number, since it is larger than the sum of its proper divisors (619659).

994440841 is a wasteful number, since it uses less digits than its factorization.

994440841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 619658.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 994440841 is about 31534.7560796021. The cubic root of 994440841 is about 998.1435025501.

The spelling of 994440841 in words is "nine hundred ninety-four million, four hundred forty thousand, eight hundred forty-one".