940981 has 2 divisors, whose sum is σ = 940982. Its totient is φ = 940980.

The previous prime is 940957. The next prime is 940993. The reversal of 940981 is 189049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 940900 + 81 = 970^2 + 9^2 .

It is a cyclic number.

It is not a de Polignac number, because 940981 - 2⁵ = 940949 is a prime.

It is a super-2 number, since 2×940981² = 1770890484722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940921) 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 as a sum of consecutive naturals, namely, 470490 + 470491.

It is an arithmetic number, because the mean of its divisors is an integer number (470491).

2⁹⁴⁰⁹⁸¹ is an apocalyptic number.

It is an amenable number.

940981 is a deficient number, since it is larger than the sum of its proper divisors (1).

940981 is an equidigital number, since it uses as much as digits as its factorization.

940981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 940981 is about 970.0417516788. The cubic root of 940981 is about 97.9926761152.

It can be divided in two parts, 9409 and 81, that multiplied together give a square (762129 = 873²).

The spelling of 940981 in words is "nine hundred forty thousand, nine hundred eighty-one".