422777077 has 2 divisors, whose sum is σ = 422777078. Its totient is φ = 422777076.

The previous prime is 422777071. The next prime is 422777081. The reversal of 422777077 is 770777224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315737361 + 107039716 = 17769^2 + 10346^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422777077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422777071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211388538 + 211388539.

It is an arithmetic number, because the mean of its divisors is an integer number (211388539).

Almost surely, 2^422777077 is an apocalyptic number.

It is an amenable number.

422777077 is a deficient number, since it is larger than the sum of its proper divisors (1).

422777077 is an equidigital number, since it uses as much as digits as its factorization.

422777077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 268912, while the sum is 43.

The square root of 422777077 is about 20561.5436434135. The cubic root of 422777077 is about 750.5341835883.

The spelling of 422777077 in words is "four hundred twenty-two million, seven hundred seventy-seven thousand, seventy-seven".