120797779 has 2 divisors, whose sum is σ = 120797780. Its totient is φ = 120797778.

The previous prime is 120797777. The next prime is 120797813. The reversal of 120797779 is 977797021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 120797779 - 2¹ = 120797777 is a prime.

It is a super-2 number, since 2×120797779² = 29184206822665682, which contains 22 as substring.

Together with 120797777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (120797773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60398889 + 60398890.

It is an arithmetic number, because the mean of its divisors is an integer number (60398890).

Almost surely, 2^120797779 is an apocalyptic number.

120797779 is a deficient number, since it is larger than the sum of its proper divisors (1).

120797779 is an equidigital number, since it uses as much as digits as its factorization.

120797779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 388962, while the sum is 49.

The square root of 120797779 is about 10990.8042926803. The cubic root of 120797779 is about 494.3330527374. Note that the first 3 decimals are identical.

The spelling of 120797779 in words is "one hundred twenty million, seven hundred ninety-seven thousand, seven hundred seventy-nine".