1023222989 has 2 divisors, whose sum is σ = 1023222990. Its totient is φ = 1023222988.

The previous prime is 1023222913. The next prime is 1023223001. The reversal of 1023222989 is 9892223201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 658794889 + 364428100 = 25667^2 + 19090^2 .

It is a cyclic number.

It is not a de Polignac number, because 1023222989 - 2²⁴ = 1006445773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1023221989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 511611494 + 511611495.

It is an arithmetic number, because the mean of its divisors is an integer number (511611495).

Almost surely, 2^1023222989 is an apocalyptic number.

It is an amenable number.

1023222989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1023222989 is an equidigital number, since it uses as much as digits as its factorization.

1023222989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 1023222989 is about 31987.8568991422. The cubic root of 1023222989 is about 1007.6818346466.

The spelling of 1023222989 in words is "one billion, twenty-three million, two hundred twenty-two thousand, nine hundred eighty-nine".