9967884 has 12 divisors (see below), whose sum is σ = 23258424. Its totient is φ = 3322624.

The previous prime is 9967883. The next prime is 9967891. The reversal of 9967884 is 4887699.

It is a happy number.

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

It is a super-2 number, since 2×9967884² = 198717422874912, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9967883) 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, 415317 + ... + 415340.

It is an arithmetic number, because the mean of its divisors is an integer number (1938202).

Almost surely, 2^9967884 is an apocalyptic number.

It is an amenable number.

9967884 is an abundant number, since it is smaller than the sum of its proper divisors (13290540).

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

9967884 is a wasteful number, since it uses less digits than its factorization.

9967884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830664 (or 830662 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 9967884 is about 3157.1955910269. The cubic root of 9967884 is about 215.2125822395.

The spelling of 9967884 in words is "nine million, nine hundred sixty-seven thousand, eight hundred eighty-four".