9867940 has 12 divisors (see below), whose sum is σ = 20722716. Its totient is φ = 3947168.

The previous prime is 9867931. The next prime is 9867959. The reversal of 9867940 is 497689.

It can be written as a sum of positive squares in 2 ways, for example, as 5963364 + 3904576 = 2442^2 + 1976^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246679 + ... + 246718.

It is an arithmetic number, because the mean of its divisors is an integer number (1726893).

Almost surely, 2^9867940 is an apocalyptic number.

It is an amenable number.

9867940 is an abundant number, since it is smaller than the sum of its proper divisors (10854776).

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

9867940 is a wasteful number, since it uses less digits than its factorization.

9867940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493406 (or 493404 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 9867940 is about 3141.3277447602. The cubic root of 9867940 is about 214.4908811732.

The spelling of 9867940 in words is "nine million, eight hundred sixty-seven thousand, nine hundred forty".