1040813 has 2 divisors, whose sum is σ = 1040814. Its totient is φ = 1040812.

The previous prime is 1040807. The next prime is 1040821. The reversal of 1040813 is 3180401.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1036324 + 4489 = 1018^2 + 67^2 .

It is a cyclic number.

It is not a de Polignac number, because 1040813 - 2⁴ = 1040797 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1040791 and 1040800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1040803) 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, 520406 + 520407.

It is an arithmetic number, because the mean of its divisors is an integer number (520407).

2^1040813 is an apocalyptic number.

It is an amenable number.

1040813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1040813 is an equidigital number, since it uses as much as digits as its factorization.

1040813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1040813 is about 1020.2024308930. The cubic root of 1040813 is about 101.3423341016.

The spelling of 1040813 in words is "one million, forty thousand, eight hundred thirteen".