9940885 has 4 divisors (see below), whose sum is σ = 11929068. Its totient is φ = 7952704.

The previous prime is 9940877. The next prime is 9940907. The reversal of 9940885 is 5880499.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5880499 = 47 ⋅125117.

It can be written as a sum of positive squares in 2 ways, for example, as 6874884 + 3066001 = 2622^2 + 1751^2 .

It is a cyclic number.

It is not a de Polignac number, because 9940885 - 2³ = 9940877 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 994084 + ... + 994093.

It is an arithmetic number, because the mean of its divisors is an integer number (2982267).

Almost surely, 2^9940885 is an apocalyptic number.

It is an amenable number.

9940885 is a deficient number, since it is larger than the sum of its proper divisors (1988183).

9940885 is a wasteful number, since it uses less digits than its factorization.

9940885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1988182.

The product of its (nonzero) digits is 103680, while the sum is 43.

The square root of 9940885 is about 3152.9169034404. The cubic root of 9940885 is about 215.0180983503.

The spelling of 9940885 in words is "nine million, nine hundred forty thousand, eight hundred eighty-five".