120447997 has 2 divisors, whose sum is σ = 120447998. Its totient is φ = 120447996.

The previous prime is 120447979. The next prime is 120448001. The reversal of 120447997 is 799744021.

Together with previous prime (120447979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120428676 + 19321 = 10974^2 + 139^2 .

It is a cyclic number.

It is not a de Polignac number, because 120447997 - 2¹⁹ = 119923709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120447947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60223998 + 60223999.

It is an arithmetic number, because the mean of its divisors is an integer number (60223999).

Almost surely, 2^120447997 is an apocalyptic number.

It is an amenable number.

120447997 is a deficient number, since it is larger than the sum of its proper divisors (1).

120447997 is an equidigital number, since it uses as much as digits as its factorization.

120447997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 120447997 is about 10974.8802726955. The cubic root of 120447997 is about 493.8554612733.

The spelling of 120447997 in words is "one hundred twenty million, four hundred forty-seven thousand, nine hundred ninety-seven".