9819964 has 24 divisors (see below), whose sum is σ = 21426048. Its totient is φ = 3825840.

The previous prime is 9819961. The next prime is 9819967. The reversal of 9819964 is 4699189.

It is an interprime number because it is at equal distance from previous prime (9819961) and next prime (9819967).

It is a super-2 number, since 2×9819964² = 192863385922592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9819961) 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, 15634 + ... + 16249.

It is an arithmetic number, because the mean of its divisors is an integer number (892752).

Almost surely, 2^9819964 is an apocalyptic number.

It is an amenable number.

9819964 is an abundant number, since it is smaller than the sum of its proper divisors (11606084).

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

9819964 is a wasteful number, since it uses less digits than its factorization.

9819964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31905 (or 31903 counting only the distinct ones).

The product of its digits is 139968, while the sum is 46.

The square root of 9819964 is about 3133.6821791624. The cubic root of 9819964 is about 214.1427120393.

The spelling of 9819964 in words is "nine million, eight hundred nineteen thousand, nine hundred sixty-four".