97780093 has 2 divisors, whose sum is σ = 97780094. Its totient is φ = 97780092.

The previous prime is 97780091. The next prime is 97780097. The reversal of 97780093 is 39008779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97574884 + 205209 = 9878^2 + 453^2 .

It is an emirp because it is prime and its reverse (39008779) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 97780093 - 2¹ = 97780091 is a prime.

Together with 97780091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (97780091) 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, 48890046 + 48890047.

It is an arithmetic number, because the mean of its divisors is an integer number (48890047).

Almost surely, 2^97780093 is an apocalyptic number.

It is an amenable number.

97780093 is a deficient number, since it is larger than the sum of its proper divisors (1).

97780093 is an equidigital number, since it uses as much as digits as its factorization.

97780093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 97780093 is about 9888.3817179557. The cubic root of 97780093 is about 460.6985181460.

The spelling of 97780093 in words is "ninety-seven million, seven hundred eighty thousand, ninety-three".