427394213 has 2 divisors, whose sum is σ = 427394214. Its totient is φ = 427394212.

The previous prime is 427394207. The next prime is 427394239. The reversal of 427394213 is 312493724.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 391129729 + 36264484 = 19777^2 + 6022^2 .

It is a cyclic number.

It is not a de Polignac number, because 427394213 - 2²⁰ = 426345637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (427394293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213697106 + 213697107.

It is an arithmetic number, because the mean of its divisors is an integer number (213697107).

Almost surely, 2^427394213 is an apocalyptic number.

It is an amenable number.

427394213 is a deficient number, since it is larger than the sum of its proper divisors (1).

427394213 is an equidigital number, since it uses as much as digits as its factorization.

427394213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 35.

The square root of 427394213 is about 20673.5147713203. The cubic root of 427394213 is about 753.2564846861.

The spelling of 427394213 in words is "four hundred twenty-seven million, three hundred ninety-four thousand, two hundred thirteen".