97908449 has 2 divisors, whose sum is σ = 97908450. Its totient is φ = 97908448.

The previous prime is 97908439. The next prime is 97908469. The reversal of 97908449 is 94480979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66716224 + 31192225 = 8168^2 + 5585^2 .

It is an emirp because it is prime and its reverse (94480979) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97908449 - 2²⁴ = 81131233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 97908397 and 97908406.

It is not a weakly prime, because it can be changed into another prime (97908439) 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, 48954224 + 48954225.

It is an arithmetic number, because the mean of its divisors is an integer number (48954225).

Almost surely, 2^97908449 is an apocalyptic number.

It is an amenable number.

97908449 is a deficient number, since it is larger than the sum of its proper divisors (1).

97908449 is an equidigital number, since it uses as much as digits as its factorization.

97908449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 97908449 is about 9894.8698323929. The cubic root of 97908449 is about 460.9000164306.

The spelling of 97908449 in words is "ninety-seven million, nine hundred eight thousand, four hundred forty-nine".