985844369 has 4 divisors (see below), whose sum is σ = 997722096. Its totient is φ = 973966644.

The previous prime is 985844347. The next prime is 985844449. The reversal of 985844369 is 963448589.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-985844369 is a prime.

It is a super-2 number, since 2×985844369² = 1943778239778016322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (985844309) 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, 5938739 + ... + 5938904.

It is an arithmetic number, because the mean of its divisors is an integer number (249430524).

Almost surely, 2^985844369 is an apocalyptic number.

It is an amenable number.

985844369 is a deficient number, since it is larger than the sum of its proper divisors (11877727).

985844369 is a wasteful number, since it uses less digits than its factorization.

985844369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11877726.

The product of its digits is 7464960, while the sum is 56.

The square root of 985844369 is about 31398.1586880505. The cubic root of 985844369 is about 995.2590149147.

The spelling of 985844369 in words is "nine hundred eighty-five million, eight hundred forty-four thousand, three hundred sixty-nine".