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97891193 is a prime number
BaseRepresentation
bin1011101010110…
…11001101111001
320211012101110202
411311123031321
5200030004233
613414051545
72266030031
oct565331571
9224171422
1097891193
1150291114
1228949bb5
13173859aa
14d0028c1
1588d9be8
hex5d5b379

97891193 has 2 divisors, whose sum is σ = 97891194. Its totient is φ = 97891192.

The previous prime is 97891147. The next prime is 97891223. The reversal of 97891193 is 39119879.

It is a happy number.

97891193 is nontrivially palindromic in base 9.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71182969 + 26708224 = 8437^2 + 5168^2 .

It is a cyclic number.

It is not a de Polignac number, because 97891193 - 220 = 96842617 is a prime.

It is not a weakly prime, because it can be changed into another prime (97891093) 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, 48945596 + 48945597.

It is an arithmetic number, because the mean of its divisors is an integer number (48945597).

Almost surely, 297891193 is an apocalyptic number.

It is an amenable number.

97891193 is a deficient number, since it is larger than the sum of its proper divisors (1).

97891193 is an equidigital number, since it uses as much as digits as its factorization.

97891193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 122472, while the sum is 47.

The square root of 97891193 is about 9893.9978269656. The cubic root of 97891193 is about 460.8729375351.

The spelling of 97891193 in words is "ninety-seven million, eight hundred ninety-one thousand, one hundred ninety-three".