422693077 has 2 divisors, whose sum is σ = 422693078. Its totient is φ = 422693076.

The previous prime is 422693039. The next prime is 422693093. The reversal of 422693077 is 770396224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 277755556 + 144937521 = 16666^2 + 12039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422693077 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 (422693027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211346538 + 211346539.

It is an arithmetic number, because the mean of its divisors is an integer number (211346539).

Almost surely, 2^422693077 is an apocalyptic number.

It is an amenable number.

422693077 is a deficient number, since it is larger than the sum of its proper divisors (1).

422693077 is an equidigital number, since it uses as much as digits as its factorization.

422693077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 40.

The square root of 422693077 is about 20559.5008937474. The cubic root of 422693077 is about 750.4844733504.

The spelling of 422693077 in words is "four hundred twenty-two million, six hundred ninety-three thousand, seventy-seven".