985554953 has 4 divisors (see below), whose sum is σ = 989062548. Its totient is φ = 982047360.

The previous prime is 985554901. The next prime is 985554959. The reversal of 985554953 is 359455589.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359455589 = 3361 ⋅106949.

It can be written as a sum of positive squares in 2 ways, for example, as 699708304 + 285846649 = 26452^2 + 16907^2 .

It is a cyclic number.

It is not a de Polignac number, because 985554953 - 2¹⁰ = 985553929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 985554895 and 985554904.

It is not an unprimeable number, because it can be changed into a prime (985554959) 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, 1753376 + ... + 1753937.

It is an arithmetic number, because the mean of its divisors is an integer number (247265637).

Almost surely, 2^985554953 is an apocalyptic number.

It is an amenable number.

985554953 is a deficient number, since it is larger than the sum of its proper divisors (3507595).

985554953 is a wasteful number, since it uses less digits than its factorization.

985554953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507594.

The product of its digits is 4860000, while the sum is 53.

The square root of 985554953 is about 31393.5495444526. The cubic root of 985554953 is about 995.1616120913.

The spelling of 985554953 in words is "nine hundred eighty-five million, five hundred fifty-four thousand, nine hundred fifty-three".