97880389 has 2 divisors, whose sum is σ = 97880390. Its totient is φ = 97880388.

The previous prime is 97880353. The next prime is 97880411. The reversal of 97880389 is 98308879.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51408900 + 46471489 = 7170^2 + 6817^2 .

It is a cyclic number.

It is not a de Polignac number, because 97880389 - 2⁹ = 97879877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97880309) 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, 48940194 + 48940195.

It is an arithmetic number, because the mean of its divisors is an integer number (48940195).

Almost surely, 2^97880389 is an apocalyptic number.

It is an amenable number.

97880389 is a deficient number, since it is larger than the sum of its proper divisors (1).

97880389 is an equidigital number, since it uses as much as digits as its factorization.

97880389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 870912, while the sum is 52.

The square root of 97880389 is about 9893.4518243129. The cubic root of 97880389 is about 460.8559817898.

The spelling of 97880389 in words is "ninety-seven million, eight hundred eighty thousand, three hundred eighty-nine".