1089242797 has 2 divisors, whose sum is σ = 1089242798. Its totient is φ = 1089242796.

The previous prime is 1089242771. The next prime is 1089242807. The reversal of 1089242797 is 7972429801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 827482756 + 261760041 = 28766^2 + 16179^2 .

It is a cyclic number.

It is not a de Polignac number, because 1089242797 - 2⁷ = 1089242669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1089242797.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1089242897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 544621398 + 544621399.

It is an arithmetic number, because the mean of its divisors is an integer number (544621399).

Almost surely, 2^1089242797 is an apocalyptic number.

It is an amenable number.

1089242797 is a deficient number, since it is larger than the sum of its proper divisors (1).

1089242797 is an equidigital number, since it uses as much as digits as its factorization.

1089242797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 1089242797 is about 33003.6785373994. The cubic root of 1089242797 is about 1028.9041025712.

The spelling of 1089242797 in words is "one billion, eighty-nine million, two hundred forty-two thousand, seven hundred ninety-seven".