120280889 has 2 divisors, whose sum is σ = 120280890. Its totient is φ = 120280888.

The previous prime is 120280871. The next prime is 120280981. The reversal of 120280889 is 988082021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87984400 + 32296489 = 9380^2 + 5683^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120280889 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (120280819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60140444 + 60140445.

It is an arithmetic number, because the mean of its divisors is an integer number (60140445).

Almost surely, 2^120280889 is an apocalyptic number.

It is an amenable number.

120280889 is a deficient number, since it is larger than the sum of its proper divisors (1).

120280889 is an equidigital number, since it uses as much as digits as its factorization.

120280889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 120280889 is about 10967.2644264648. The cubic root of 120280889 is about 493.6269660011.

The spelling of 120280889 in words is "one hundred twenty million, two hundred eighty thousand, eight hundred eighty-nine".