985436911 has 4 divisors (see below), whose sum is σ = 985504824. Its totient is φ = 985369000.

The previous prime is 985436867. The next prime is 985436917. The reversal of 985436911 is 119634589.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 119634589 = 7331 ⋅16319.

It is a cyclic number.

It is not a de Polignac number, because 985436911 - 2⁷ = 985436783 is a prime.

It is a super-2 number, since 2×985436911² = 1942171811122443842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (985436917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2440 + ... + 44461.

It is an arithmetic number, because the mean of its divisors is an integer number (246376206).

Almost surely, 2^985436911 is an apocalyptic number.

985436911 is a deficient number, since it is larger than the sum of its proper divisors (67913).

985436911 is a wasteful number, since it uses less digits than its factorization.

985436911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67912.

The product of its digits is 233280, while the sum is 46.

The square root of 985436911 is about 31391.6694522607. The cubic root of 985436911 is about 995.1218796351.

The spelling of 985436911 in words is "nine hundred eighty-five million, four hundred thirty-six thousand, nine hundred eleven".