97993549 has 2 divisors, whose sum is σ = 97993550. Its totient is φ = 97993548.

The previous prime is 97993531. The next prime is 97993589. The reversal of 97993549 is 94539979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60171049 + 37822500 = 7757^2 + 6150^2 .

It is a cyclic number.

It is not a de Polignac number, because 97993549 - 2⁷ = 97993421 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97993549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97993589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48996774 + 48996775.

It is an arithmetic number, because the mean of its divisors is an integer number (48996775).

Almost surely, 2^97993549 is an apocalyptic number.

It is an amenable number.

97993549 is a deficient number, since it is larger than the sum of its proper divisors (1).

97993549 is an equidigital number, since it uses as much as digits as its factorization.

97993549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2755620, while the sum is 55.

The square root of 97993549 is about 9899.1691065463. The cubic root of 97993549 is about 461.0335126830.

The spelling of 97993549 in words is "ninety-seven million, nine hundred ninety-three thousand, five hundred forty-nine".