422421977 has 2 divisors, whose sum is σ = 422421978. Its totient is φ = 422421976.

The previous prime is 422421971. The next prime is 422422037. The reversal of 422421977 is 779124224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 354342976 + 68079001 = 18824^2 + 8251^2 .

It is a cyclic number.

It is not a de Polignac number, because 422421977 - 2⁸ = 422421721 is a prime.

It is a super-3 number, since 3×422421977³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 422421977.

It is not a weakly prime, because it can be changed into another prime (422421971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211210988 + 211210989.

It is an arithmetic number, because the mean of its divisors is an integer number (211210989).

Almost surely, 2^422421977 is an apocalyptic number.

It is an amenable number.

422421977 is a deficient number, since it is larger than the sum of its proper divisors (1).

422421977 is an equidigital number, since it uses as much as digits as its factorization.

422421977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 38.

The square root of 422421977 is about 20552.9067773880. The cubic root of 422421977 is about 750.3239945351.

The spelling of 422421977 in words is "four hundred twenty-two million, four hundred twenty-one thousand, nine hundred seventy-seven".