422381969 has 2 divisors, whose sum is σ = 422381970. Its totient is φ = 422381968.

The previous prime is 422381929. The next prime is 422381977. The reversal of 422381969 is 969183224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291965569 + 130416400 = 17087^2 + 11420^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-422381969 is a prime.

It is a super-2 number, since 2×422381969² = 356813055472633922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (422381929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211190984 + 211190985.

It is an arithmetic number, because the mean of its divisors is an integer number (211190985).

Almost surely, 2^422381969 is an apocalyptic number.

It is an amenable number.

422381969 is a deficient number, since it is larger than the sum of its proper divisors (1).

422381969 is an equidigital number, since it uses as much as digits as its factorization.

422381969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 422381969 is about 20551.9334613559. The cubic root of 422381969 is about 750.3003058132.

The spelling of 422381969 in words is "four hundred twenty-two million, three hundred eighty-one thousand, nine hundred sixty-nine".