120798649 has 2 divisors, whose sum is σ = 120798650. Its totient is φ = 120798648.

The previous prime is 120798589. The next prime is 120798679. The reversal of 120798649 is 946897021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118374400 + 2424249 = 10880^2 + 1557^2 .

It is a cyclic number.

It is not a de Polignac number, because 120798649 - 2²⁵ = 87244217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120798599 and 120798608.

It is not a weakly prime, because it can be changed into another prime (120798679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60399324 + 60399325.

It is an arithmetic number, because the mean of its divisors is an integer number (60399325).

Almost surely, 2^120798649 is an apocalyptic number.

It is an amenable number.

120798649 is a deficient number, since it is larger than the sum of its proper divisors (1).

120798649 is an equidigital number, since it uses as much as digits as its factorization.

120798649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 120798649 is about 10990.8438711502. The cubic root of 120798649 is about 494.3342394831.

It can be divided in two parts, 1207 and 98649, that added together give a square (99856 = 316²).

The spelling of 120798649 in words is "one hundred twenty million, seven hundred ninety-eight thousand, six hundred forty-nine".