97889563 has 2 divisors, whose sum is σ = 97889564. Its totient is φ = 97889562.

The previous prime is 97889557. The next prime is 97889639. The reversal of 97889563 is 36598879.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97889563 is a prime.

It is not a weakly prime, because it can be changed into another prime (97889513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48944781 + 48944782.

It is an arithmetic number, because the mean of its divisors is an integer number (48944782).

Almost surely, 2^97889563 is an apocalyptic number.

97889563 is a deficient number, since it is larger than the sum of its proper divisors (1).

97889563 is an equidigital number, since it uses as much as digits as its factorization.

97889563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 55.

The square root of 97889563 is about 9893.9154534492. The cubic root of 97889563 is about 460.8703795009.

The spelling of 97889563 in words is "ninety-seven million, eight hundred eighty-nine thousand, five hundred sixty-three".