1089242669 has 2 divisors, whose sum is σ = 1089242670. Its totient is φ = 1089242668.

The previous prime is 1089242663. The next prime is 1089242677. The reversal of 1089242669 is 9662429801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1073545225 + 15697444 = 32765^2 + 3962^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089242669 - 2⁴ = 1089242653 is a prime.

It is a super-2 number, since 2×1089242669² = 2372899183940487122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089242663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544621334 + 544621335.

It is an arithmetic number, because the mean of its divisors is an integer number (544621335).

Almost surely, 2^1089242669 is an apocalyptic number.

It is an amenable number.

1089242669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089242669 is an equidigital number, since it uses as much as digits as its factorization.

1089242669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 1089242669 is about 33003.6765982216. The cubic root of 1089242669 is about 1028.9040622681.

The spelling of 1089242669 in words is "one billion, eighty-nine million, two hundred forty-two thousand, six hundred sixty-nine".