985961869 has 8 divisors (see below), whose sum is σ = 1044241848. Its totient is φ = 927713280.

The previous prime is 985961863. The next prime is 985961881. The reversal of 985961869 is 968169589.

It is a happy number.

985961869 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 315844 + 985646025 = 562^2 + 31395^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 985961869 - 2¹⁵ = 985929101 is a prime.

It is a super-2 number, since 2×985961869² = 1944241614243946322, 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 (985961863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96829 + ... + 106525.

It is an arithmetic number, because the mean of its divisors is an integer number (130530231).

Almost surely, 2^985961869 is an apocalyptic number.

It is an amenable number.

985961869 is a deficient number, since it is larger than the sum of its proper divisors (58279979).

985961869 is a wasteful number, since it uses less digits than its factorization.

985961869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15695.

The product of its digits is 8398080, while the sum is 61.

The square root of 985961869 is about 31400.0297611324. The cubic root of 985961869 is about 995.2985540456.

The spelling of 985961869 in words is "nine hundred eighty-five million, nine hundred sixty-one thousand, eight hundred sixty-nine".