10940981 has 4 divisors (see below), whose sum is σ = 10988172. Its totient is φ = 10893792.

The previous prime is 10940959. The next prime is 10940987. The reversal of 10940981 is 18904901.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2588881 + 8352100 = 1609^2 + 2890^2 .

It is a cyclic number.

It is not a de Polignac number, because 10940981 - 2¹⁴ = 10924597 is a prime.

It is a super-2 number, since 2×10940981² = 239410130484722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10940987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23246 + ... + 23711.

It is an arithmetic number, because the mean of its divisors is an integer number (2747043).

Almost surely, 2^10940981 is an apocalyptic number.

It is an amenable number.

10940981 is a deficient number, since it is larger than the sum of its proper divisors (47191).

10940981 is an equidigital number, since it uses as much as digits as its factorization.

10940981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47190.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 10940981 is about 3307.7153746960. The cubic root of 10940981 is about 221.9995468432. Note that the first 3 decimals are identical.

The spelling of 10940981 in words is "ten million, nine hundred forty thousand, nine hundred eighty-one".