120288869 has 2 divisors, whose sum is σ = 120288870. Its totient is φ = 120288868.

The previous prime is 120288851. The next prime is 120288871. The reversal of 120288869 is 968882021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 46758244 = 8575^2 + 6838^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120288869 is a prime.

It is a super-2 number, since 2×120288869² = 28938824010598322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 120288871, it forms a pair of twin primes.

It is a Chen 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 (120288899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60144434 + 60144435.

It is an arithmetic number, because the mean of its divisors is an integer number (60144435).

Almost surely, 2^120288869 is an apocalyptic number.

It is an amenable number.

120288869 is a deficient number, since it is larger than the sum of its proper divisors (1).

120288869 is an equidigital number, since it uses as much as digits as its factorization.

120288869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 44.

The square root of 120288869 is about 10967.6282303878. The cubic root of 120288869 is about 493.6378822714.

The spelling of 120288869 in words is "one hundred twenty million, two hundred eighty-eight thousand, eight hundred sixty-nine".