940813 has 2 divisors, whose sum is σ = 940814. Its totient is φ = 940812.

The previous prime is 940801. The next prime is 940817. The reversal of 940813 is 318049.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 915849 + 24964 = 957^2 + 158^2 .

It is a cyclic number.

It is not a de Polignac number, because 940813 - 2⁵ = 940781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (940817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 470406 + 470407.

It is an arithmetic number, because the mean of its divisors is an integer number (470407).

2⁹⁴⁰⁸¹³ is an apocalyptic number.

It is an amenable number.

940813 is a deficient number, since it is larger than the sum of its proper divisors (1).

940813 is an equidigital number, since it uses as much as digits as its factorization.

940813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 940813 is about 969.9551536025. The cubic root of 940813 is about 97.9868439927.

The spelling of 940813 in words is "nine hundred forty thousand, eight hundred thirteen".