9867428412 has 12 divisors (see below), whose sum is σ = 23023999656. Its totient is φ = 3289142800.

The previous prime is 9867428401. The next prime is 9867428413. The reversal of 9867428412 is 2148247689.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×9867428412² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9867428413) 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, 411142839 + ... + 411142862.

It is an arithmetic number, because the mean of its divisors is an integer number (1918666638).

Almost surely, 2^9867428412 is an apocalyptic number.

It is an amenable number.

9867428412 is an abundant number, since it is smaller than the sum of its proper divisors (13156571244).

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

9867428412 is a wasteful number, since it uses less digits than its factorization.

9867428412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822285708 (or 822285706 counting only the distinct ones).

The product of its digits is 1548288, while the sum is 51.

The square root of 9867428412 is about 99334.9304726187. The cubic root of 9867428412 is about 2144.8717446040.

The spelling of 9867428412 in words is "nine billion, eight hundred sixty-seven million, four hundred twenty-eight thousand, four hundred twelve".