1000022389 has 2 divisors, whose sum is σ = 1000022390. Its totient is φ = 1000022388.

The previous prime is 1000022377. The next prime is 1000022393. The reversal of 1000022389 is 9832200001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 644398225 + 355624164 = 25385^2 + 18858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000022389 - 2²¹ = 997925237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1000022339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500011194 + 500011195.

It is an arithmetic number, because the mean of its divisors is an integer number (500011195).

Almost surely, 2^1000022389 is an apocalyptic number.

It is an amenable number.

1000022389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000022389 is an equidigital number, since it uses as much as digits as its factorization.

1000022389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1000022389 is about 31623.1306008750. The cubic root of 1000022389 is about 1000.0074629443.

The spelling of 1000022389 in words is "one billion, twenty-two thousand, three hundred eighty-nine".