422091977 has 2 divisors, whose sum is σ = 422091978. Its totient is φ = 422091976.

The previous prime is 422091941. The next prime is 422091983. The reversal of 422091977 is 779190224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 278355856 + 143736121 = 16684^2 + 11989^2 .

It is a cyclic number.

It is not a de Polignac number, because 422091977 - 2⁸ = 422091721 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (422091907) 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, 211045988 + 211045989.

It is an arithmetic number, because the mean of its divisors is an integer number (211045989).

Almost surely, 2^422091977 is an apocalyptic number.

It is an amenable number.

422091977 is a deficient number, since it is larger than the sum of its proper divisors (1).

422091977 is an equidigital number, since it uses as much as digits as its factorization.

422091977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 422091977 is about 20544.8771473572. The cubic root of 422091977 is about 750.1285569259.

The spelling of 422091977 in words is "four hundred twenty-two million, ninety-one thousand, nine hundred seventy-seven".