97247993 has 2 divisors, whose sum is σ = 97247994. Its totient is φ = 97247992.

The previous prime is 97247987. The next prime is 97248031. The reversal of 97247993 is 39974279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96098809 + 1149184 = 9803^2 + 1072^2 .

It is an emirp because it is prime and its reverse (39974279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97247993 - 2⁴ = 97247977 is a prime.

It is a nialpdrome in base 14.

It is not a weakly prime, because it can be changed into another prime (97247923) 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, 48623996 + 48623997.

It is an arithmetic number, because the mean of its divisors is an integer number (48623997).

Almost surely, 2^97247993 is an apocalyptic number.

It is an amenable number.

97247993 is a deficient number, since it is larger than the sum of its proper divisors (1).

97247993 is an equidigital number, since it uses as much as digits as its factorization.

97247993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 50.

The square root of 97247993 is about 9861.4397021936. The cubic root of 97247993 is about 459.8613208296.

The spelling of 97247993 in words is "ninety-seven million, two hundred forty-seven thousand, nine hundred ninety-three".