422020477 has 2 divisors, whose sum is σ = 422020478. Its totient is φ = 422020476.

The previous prime is 422020439. The next prime is 422020493. The reversal of 422020477 is 774020224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351225081 + 70795396 = 18741^2 + 8414^2 .

It is a cyclic number.

It is not a de Polignac number, because 422020477 - 2⁷ = 422020349 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422090477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211010238 + 211010239.

It is an arithmetic number, because the mean of its divisors is an integer number (211010239).

Almost surely, 2^422020477 is an apocalyptic number.

It is an amenable number.

422020477 is a deficient number, since it is larger than the sum of its proper divisors (1).

422020477 is an equidigital number, since it uses as much as digits as its factorization.

422020477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 28.

The square root of 422020477 is about 20543.1369805101. The cubic root of 422020477 is about 750.0861986853.

The spelling of 422020477 in words is "four hundred twenty-two million, twenty thousand, four hundred seventy-seven".