97228144249 has 2 divisors, whose sum is σ = 97228144250. Its totient is φ = 97228144248.

The previous prime is 97228144159. The next prime is 97228144259. The reversal of 97228144249 is 94244182279.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55268718649 + 41959425600 = 235093^2 + 204840^2 .

It is a cyclic number.

It is not a de Polignac number, because 97228144249 - 2⁷ = 97228144121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97228144196 and 97228144205.

It is not a weakly prime, because it can be changed into another prime (97228144259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48614072124 + 48614072125.

It is an arithmetic number, because the mean of its divisors is an integer number (48614072125).

Almost surely, 2^97228144249 is an apocalyptic number.

It is an amenable number.

97228144249 is a deficient number, since it is larger than the sum of its proper divisors (1).

97228144249 is an equidigital number, since it uses as much as digits as its factorization.

97228144249 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 52.

The spelling of 97228144249 in words is "ninety-seven billion, two hundred twenty-eight million, one hundred forty-four thousand, two hundred forty-nine".