427802813 has 2 divisors, whose sum is σ = 427802814. Its totient is φ = 427802812.

The previous prime is 427802779. The next prime is 427802819. The reversal of 427802813 is 318208724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 303212569 + 124590244 = 17413^2 + 11162^2 .

It is a cyclic number.

It is not a de Polignac number, because 427802813 - 2¹⁰ = 427801789 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427802819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213901406 + 213901407.

It is an arithmetic number, because the mean of its divisors is an integer number (213901407).

Almost surely, 2^427802813 is an apocalyptic number.

It is an amenable number.

427802813 is a deficient number, since it is larger than the sum of its proper divisors (1).

427802813 is an equidigital number, since it uses as much as digits as its factorization.

427802813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 427802813 is about 20683.3946198394. The cubic root of 427802813 is about 753.4964525037.

The spelling of 427802813 in words is "four hundred twenty-seven million, eight hundred two thousand, eight hundred thirteen".