42222222989 has 2 divisors, whose sum is σ = 42222222990. Its totient is φ = 42222222988.

The previous prime is 42222222937. The next prime is 42222223007. The reversal of 42222222989 is 98922222224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28051225225 + 14170997764 = 167485^2 + 119042^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42222222989 is a prime.

It is a super-2 number, since 2×42222222989² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42222222089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21111111494 + 21111111495.

It is an arithmetic number, because the mean of its divisors is an integer number (21111111495).

Almost surely, 2^42222222989 is an apocalyptic number.

It is an amenable number.

42222222989 is a deficient number, since it is larger than the sum of its proper divisors (1).

42222222989 is an equidigital number, since it uses as much as digits as its factorization.

42222222989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 44.

The spelling of 42222222989 in words is "forty-two billion, two hundred twenty-two million, two hundred twenty-two thousand, nine hundred eighty-nine".