989446825 has 6 divisors (see below), whose sum is σ = 1226914094. Its totient is φ = 791557440.

The previous prime is 989446789. The next prime is 989446847. The reversal of 989446825 is 528644989.

It can be written as a sum of positive squares in 3 ways, for example, as 8003241 + 981443584 = 2829^2 + 31328^2 .

It is not a de Polignac number, because 989446825 - 2¹⁵ = 989414057 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 19788912 + ... + 19788961.

Almost surely, 2^989446825 is an apocalyptic number.

It is an amenable number.

989446825 is a deficient number, since it is larger than the sum of its proper divisors (237467269).

989446825 is a wasteful number, since it uses less digits than its factorization.

989446825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39577883 (or 39577878 counting only the distinct ones).

The product of its digits is 4976640, while the sum is 55.

The square root of 989446825 is about 31455.4736890100. The cubic root of 989446825 is about 996.4698275469.

The spelling of 989446825 in words is "nine hundred eighty-nine million, four hundred forty-six thousand, eight hundred twenty-five".