9866831416 has 32 divisors (see below), whose sum is σ = 21095378640. Its totient is φ = 4286043648.

The previous prime is 9866831411. The next prime is 9866831417. The reversal of 9866831416 is 6141386689.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9866831411) 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, 2788626 + ... + 2792161.

Almost surely, 2^9866831416 is an apocalyptic number.

It is an amenable number.

9866831416 is an abundant number, since it is smaller than the sum of its proper divisors (11228547224).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9866831416 is a wasteful number, since it uses less digits than its factorization.

9866831416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5580823 (or 5580819 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 52.

The square root of 9866831416 is about 99331.9254620588. The cubic root of 9866831416 is about 2144.8284876167.

The spelling of 9866831416 in words is "nine billion, eight hundred sixty-six million, eight hundred thirty-one thousand, four hundred sixteen".