422093989 has 2 divisors, whose sum is σ = 422093990. Its totient is φ = 422093988.

The previous prime is 422093963. The next prime is 422094011. The reversal of 422093989 is 989390224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 421480900 + 613089 = 20530^2 + 783^2 .

It is a cyclic number.

It is not a de Polignac number, because 422093989 - 2¹¹ = 422091941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (422093909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211046994 + 211046995.

It is an arithmetic number, because the mean of its divisors is an integer number (211046995).

Almost surely, 2^422093989 is an apocalyptic number.

It is an amenable number.

422093989 is a deficient number, since it is larger than the sum of its proper divisors (1).

422093989 is an equidigital number, since it uses as much as digits as its factorization.

422093989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 422093989 is about 20544.9261132767. The cubic root of 422093989 is about 750.1297488116.

The spelling of 422093989 in words is "four hundred twenty-two million, ninety-three thousand, nine hundred eighty-nine".