97964549 has 2 divisors, whose sum is σ = 97964550. Its totient is φ = 97964548.

The previous prime is 97964533. The next prime is 97964561. The reversal of 97964549 is 94546979.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 85840225 + 12124324 = 9265^2 + 3482^2 .

It is a cyclic number.

It is not a de Polignac number, because 97964549 - 2⁴ = 97964533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 97964549.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97964579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48982274 + 48982275.

It is an arithmetic number, because the mean of its divisors is an integer number (48982275).

Almost surely, 2^97964549 is an apocalyptic number.

It is an amenable number.

97964549 is a deficient number, since it is larger than the sum of its proper divisors (1).

97964549 is an equidigital number, since it uses as much as digits as its factorization.

97964549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 53.

The square root of 97964549 is about 9897.7042287593. The cubic root of 97964549 is about 460.9880291074.

The spelling of 97964549 in words is "ninety-seven million, nine hundred sixty-four thousand, five hundred forty-nine".